Question

scientists once believed that tyrannosaurus rex dragged its tail along the ground. today, they know that t. rex did not drag its tail but held it aloft, above the ground. this change in scientific consensus happened because
scientists liked the idea that t. rex held its tail aloft better
no one supported the idea that t. rex dragged its tail on the ground
the idea that t. rex held its tail aloft is an emerging idea that replaced the old idea
the idea that t. rex held its tail aloft was supported by the studies of many scientists

Explanation:

In science, a change in consensus occurs when new evidence from multiple studies supports a new idea. The belief that Tyrannosaurus rex held its tail aloft became the new consensus because it was backed by scientific studies, not personal preference or it being new.

Answer:

D. the idea that T. rex held its tail aloft was supported by the studies of many scientists