Fact 1: Vertebrates are animals that have a backbone. Fact 2: Trunk muscles are the muscles of abdominal wall, thorax, backbone and pelvic cavity. Given the two facts above, vertebrates are animals that have what?

Options are: a. strength b. tentacles c. Something to move d. tree muscles e. animal suits f. trunk muscles g. Epidermis h. aerobic capacity
The answer is:
f.