Although primates lack human-like vocal cords, they are still able to communicate. for example, gorillas have been taught to use sign language. when in contact with humans, gorillas occassionally initiate a sign language session. this is encouraging to researchers who want to provide evidence of primate intelligance. during a peer review, suki noticed some writing convention errors. which editing check list box did suki check? a. spelling b. punctuation c. capitalization d. grammar