Collective nouns are generally classified as A. singular
I would say the answer is a. 5 and 7 because one is talking about teaching your dog to sit and the other is teaching your dog to lay down. I have a dog and to teach her to sit the process is the same as teaching her to lay down (I.e. you do the process to teach her either of those skills). Hope this helped! :)
Answer:
D.learn if it is a desired field.
Explanation:
