Question

which choice makes the sentence most grammatically acceptable?
a. no change
b. variations—in the mantas
c. variations, in the mantas,
d. variations in the mantas

Explanation:

This is a grammar question, likely testing punctuation (em dashes, commas) for parenthetical or explanatory phrases. Option B uses an em dash to set off the explanatory phrase "in the mantas" after "variations", which is appropriate for adding extra information. Option A (No Change) would imply the original (not shown, but likely incorrect punctuation), C has an unnecessary comma, D lacks proper punctuation. So B is correct.

Answer:

B. variations—in the mantas