Answer
(a) the capacitive reactance increases.
Work Step by Step
The capacitive reactance is given by $X_{C}=\frac{1}{2\times pi\times fC}$
So, if the capacitance is decreased, the capacitive reactance will increase.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.