The root word for unmistakable is mistake
The appropriate response is the last one. Elinor's help at not telling Lucy's mystery to her mom shows a case of a nineteenth-century extraordinary feeling of protection.
I trust the appropriate response will help you. Don't hesitate to ask more in brainly.
Hyperbole
If don't know what it means its best to start of with what you do know
Process if elimination.
It's not a simile because it has no like or as.
Its not Personification cause its not giving the object human features.
And its not metaphor cause its not literally Applicable. I'm assuming.
So that just leaves you with hyperbole.
A. Is past participle
B. Is past tense
C. Is present continuous
D. Is present tense (factual)
Hence B is the right answer :)