What does the phrasal verb “jumps in one’s skin” means

A. to increase in rank or status
B. to go back over
C. to able to be exploited or easily fooled
D. to react strongly to shock or surprise

To jump in one’s skin

To jump in one’s skin means to start or recoil, as from shock, surprise, or fear.

She jumped in her skin when her room’s windows were opened by storm in the middle of the night