C# PROGRAM convert this spaghetti code to modular (oop) use functions

C# PROGRAM

convert this spaghetti code to modular (oop) use functions

source code:

using System;
class Program {
  static void Main() {
    int opt; //to read the user input for option
    bool running = true;
    String[] sentenceArr = new String[] {"How are you?", "It is lovely day. Isn't it?", "It's a pleasure to meet you.","Hello.","A pleasant morning to you."}; //array of sentences
    Random rand = new Random(); //to generate random Number
    int walkCount = 0; //total number of walks
    int walk = 0; //total number of time walk invoked
    int hop = 0; //total number of times hop invoked
    int wordCount = 0; //total number of words spoken
    
    while(running){
        Console.WriteLine("\n1 - Walk");
        Console.WriteLine("2 - Speak");
        Console.WriteLine("3 - Hop");
        Console.WriteLine("4 - Show Distance");
        Console.WriteLine("5 - Show Number of Words Spoken");
        Console.WriteLine("-----------------------------------");
        Console.Write("Select Option: ");
        opt = Convert.ToInt32(Console.ReadLine()); //reading the user input for option and converting it to integer
        switch(opt){
            case 1:
                //Case when option selected is Walk
                {
                    //Increment walk counter
                    walk++;
                    //One walk means one Walk in Distance
                    walkCount +=1;
                    Console.WriteLine("walking");
                    break;
                }
            case 2:
                //Case when option selected is Speak
                {
                    //pick a random index of sentenceArr, and display the value at the index
                    int i = rand.Next(0,sentenceArr.Length); //generate a random value between 0 and last index
                    //display the value
                    String sentence = sentenceArr[i]; //sentence about to be spoken
                    String[] words = sentence.Split(' '); //split the sentence into words
                    wordCount += words.Length; //increment total number of words spoken
                    Console.WriteLine(sentence);
                    break;
                }
            case 3:
                //Case when option selected is Hop
                {
                    hop++; //increment hop counter
                    //One hop means 2 walk in Distance
                    walkCount +=2;
                    Console.WriteLine("hop");
                    break;
                }
            case 4:
                //Case when option selected is Show Distance
                {
                    //Show the details of hop and walk with total distance covered
                    Console.WriteLine($"Total number of time Hop invoked: {hop}");
                    Console.WriteLine($"Total number of time Walk invoked: {walk}");
                    Console.WriteLine($"Total distance walked: {walkCount}");
                    break;
                }
            case 5:
                //Case when option selected is Show Number of Words Spoken
                {
                    //Print total word Spoken
                    Console.WriteLine($"Total word spoken: {wordCount}");
                    break;
                }
            default:
                //If any other value than the menu option is given, end the program
                Console.WriteLine("Error: Invalid Option!");
                Console.WriteLine("Exiting...!");
                running = false; //stop the program
                break;
        }
    }
  }
}