Which of the phrases given below the sentence should replace the phrase printed in bold type to make it grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.

She cooks, washes dishes, does her homework and then relaxing.

A.

relaxing then

B.

then is relaxing

C.

relaxing is then

D.

then relaxes

E.

No correction required

Correct answer is D

No explanation has been provided for this answer.