Correct option is C
Option (c) is the correct meaning of the given idiom.
Idiom: In the groove – Doing something very well, often consistently; being in top form. (Hindi: बेहतरीन प्रदर्शन करना / फॉर्म में होना)
Example: The singer was really in the groove during the live show.
3 Related Idioms:
·
Hit one's stride – To start performing well.
·
On fire – Doing very well continuously.
·
In the zone – Fully focused and performing at peak ability.