Correct answer = D. Somatropin.
Acromegaly is characterized by an excess of GH. Somatropin is synthetic human GH, so it would not be beneficial in this setting.
Lanreotide and octreotide are synthetic analogs of somatostatin, which inhibits GH. Pegvisomant is an antagonist at GH receptors and is used to treat acromegaly.