Troglodytic means behaving like a recluse and hence Option D is the correct option.
Option A: Cadaverous means very pale, thin or bony. This is an incorrect option.
Option B: Ominous is giving the worrying impression that something bad is going to happen. This is an incorrect option as this is not the meaning of the mentioned word.
Option C:This is not the meaning of the mentioned word and hence this is an incorrect option.