I believe the answer is Adjective Clause because some signal words that give away that it could be an Adjective Clause is THAT, Which, Who, Whom, and Whose. And the word "That" is part of the underlined section, correct?
Answer:
Simile
Explanation:
In figurative language, a simile is defined by comparing someone to something-- "As swift as a cheetah", "brave like a lion", or in this case, "steady as a rock".
Answer:
the answer is the second option
