Answer:
<em>Implies they are less sensible or suffer less with what their hearts feel. </em>
Explanation:
The phrase “hardened their hearts” in this excerpt of The War of the Worlds is like a metaphor, because the heart itself cannot be hardened, it means they were stronger or were made harder with their feelings and emotions due to the pressure of necessity, “hardened their hearts” implies they are less sensible or suffer less with what their hearts feel.
I would say it is plausible without knowing the options.
false
example, you are not always a child you become the mother of a child
hope this helps :)