Question

Read this line from Frankenstein by Mary Shelley:

It was already one in the morning; the rain pattered dismally against the panes, and my candle was nearly burnt out, when, by the glimmer of the half-extinguished light, I saw the dull yellow eye of the creature open; it breathed hard, and a convulsive motion agitated its limbs.

Considering the use of the word agitated in this line, what is the most likely meaning of the word convulsive?

Smooth

Gentle

Agile

Jerky

the answer is D