In question below fill the gap with the appropriate option: Three quarters of the Physics class _____ dramatically

In question below fill the gap with the appropriate option:

Three quarters of the Physics class _____ dramatically

Answer Details

The appropriate option to fill the gap is "is improving." The subject "Three quarters of the Physics class" is treated as a singular entity, and therefore, the singular verb "is" should be used instead of "are." "Improving" is the present participle of the verb "improve" and is used to describe ongoing or continuous actions, which is appropriate in this context.