Which sentence is grammatically correct? “The managers who run the restaurant insists that he is not eligible for medical coverage.” OR “The managers who run the restaurant insist that he is not eligible for medical coverage.”

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