Fact 1: Better senses have a positive impact on an animal 's survival. Fact 2: An antelope has such a fine sense of hearing that it senses danger long in advance. Given the two facts above, which characteristic helps an antelope survive?
a. exoskeleton; b. poor sense of smell; c. bad manners; d. protective bony armor; e. Endocrine system; f. excellent hearing; g. bad vision; h. Males and females;
f.