Question

page 11 from myths of greece and rome by h. a. guerber
...
\in obedience to this advice, hercules went to the caucasian mountains, where, on the brink of a mighty precipice, he found prometheus, still bound with adamantine chains, and still a prey to the ravenous vultures.\ (paragraph 4)
in latin, the word \adamas\ was used to name the hardest substance on earth. based on this information, what does the word adamantine mean as it is used in this sentence?
options: heated, horrible, unusual, unyielding

Explanation:

We know from the text that "adamas" in Latin named the hardest substance on earth. The word "adamantine" is related to "adamas". Now we analyze the options: "heated" is about temperature, "horrible" is about being unpleasant, "unusual" is about being not common, and "unyielding" means not giving in or being hard (like a hard substance that doesn't bend). Since "adamas" is the hardest substance, "unyielding" fits as it implies hardness and not being easily bent or broken, matching the idea of a hard substance.

Answer:

D. unyielding