My answer is B. Following though is a noun modifier: “tiny, blind and translucent” (remember that adj is considered noun modifier).
Full sentence: Though it is tiny, blind, and translucent, a recently discovered species of catfish has thickened bones and armor plates on its sides that lessen its vulnerability.
Full sentence: Though it is tiny, blind, and translucent, a recently discovered species of catfish has thickened bones and armor plates on its sides that lessen its vulnerability.



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