I think it’s either “related correspondence” or “materials too bulky to include in the main text”
Enjoying walks, talking with family, seeking professional help. i would recommend those activities because the first two help you realize what you’re missing out on, and the second one is to get proper help with becoming sober, safely.
Explanation:
I think that every answer from your question is correct because the player who will do the serve can stand anywhere to serve the ball but the most important thing is that he should stand behind the end line. Your answers here are referring to that every service is done from the back and that is why I think those are all correct answers.
I hope that this information will help you to recognize the correct answer.
C is going to be the best answer to this question.