Which of the following statements is correct with respect to the evolutionary relationship between chordates and invertebrates?

a. chordates are most closely related to arthropods
b. chordates evolved from echinoderms
c. chordates are more closely related to echinoderms than to arthropods
d. chordates are most closely related to the tunicate type of echinoderms

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.