A turtle shell appears external to the animal, protecting its body like armor. ______ blank the shell is often incorrectly

Question

A turtle shell appears external to the animal, protecting its body like armor. blank the shell is often incorrectly assumed to be an exoskeleton, a rigid outer casing like that of a crustacean or an insect, when in fact it is an endoskeleton, a part of the turtle’s internal bone structure, more akin to a spine or a pair of ribs.

Which choice completes the text with the most logical transition?

Accepted Answer

Choice D is the best answer. "Hence" logically signals that the information in this sentence about turtle shells-that people incorrectly assume they are exoskeletons-is a consequence of the shells appearing external to the animal. Choice A is incorrect because "that being said" illogically signals that this sentence qualifies or contrasts with the previous information about turtle shells appearing external to the animal. Instead, it presents a consequence of that information. Choice B is incorrect because "however" illogically signals that this sentence contrasts with the previous information about turtle shells appearing external to the animal. Instead, it presents a consequence of that information. Choice C is incorrect because "for instance" illogically signals that this sentence provides an example supporting the previous information about turtle shells appearing external to the animal. Instead, it presents a consequence of that information.

Question a-turt