Approach or Approaches
Hello，Everyone

I am getting confused of in the following sentence whether the form of approach be used in plural or singular ？Why ？

By engaging students in discussion or debate，instructors can identify areas in which understanding is lacking and clarify the revelant concepts or modify their approaches to roduce better results

Thanks in advance ：D

Question

Approach or Approaches
Hello，Everyone

I am getting confused of in the following sentence whether the form of approach be used in plural or singular ？Why ？

By engaging students in discussion or debate，instructors can identify areas in which understanding is lacking and clarify the revelant concepts or modify their approaches to roduce better results

Thanks in advance ：D

Answer

"approach" is always a countable noun.

If I have one approach - my approach

If two or more people have the same approach - their approach.

If I have two approaches - my approaches

If two or more people have different approaches - their approaches.

Answer

The context above says that their approach is the right answer