Question

Read this line from Frankenstein by Mary Shelley:

Answer 1

Agitated.It says words in your questions so are you looking for more than one word or was the s in there by accident?

Answer 2

D. Agitated

What is being described in this excerpt is the violent shaking of Frankenstein’s creature when it was coming to life.  When one has convulsions, one begins to shake uncontrollably almost as one would do when having a seizure.  “Agitated” is the only word that begins to allude to this as “glimmer,” “dull,” and “creature” have no relation to “convulsive.”