Which of the following sentences is written in the passive voice? a. my friend searched high and low for the perfect birthday gift for his mother. b. my friend studied all night for a test, and this morning he looked completely wiped out. c. my friend was asked repeatedly to stop throwing rocks at the passing cars. d. my friend called me last week to him out of a tough situation.

Ivansanger rainsfordgeneral zaroffwhitneyadventurous hunter; calm and composed; considers himself a realist; new yorker; veteran of world war ia hunter; sympathetic to the plight of voiceless, defenseless animals; cautiouscossack; mute; formidable physical stature; wears a black uniform; used to whip prisoners for the great white czarcossack; aristocrat; has sharp, pointed teeth and red lips; devoid of humanity and emotion