Question

the leaf insect, easily mistaken for a real ______ maintains a constant wobble as part of its illusion. which choice completes the text so that it conforms to the conventions of standard english? choose 1 answer: a leaf, b leaf c leaf— d leaf;

Explanation:

The sentence structure here is a single independent clause with a noun phrase "a real leaf" as part of the prepositional phrase "mistaken for a real...". There is no need for a comma, em - dash, or semicolon here. A comma would incorrectly separate parts of the sentence, an em - dash is used for interruption or emphasis (not needed here), and a semicolon is used to separate two independent clauses (there is only one clause here). So the correct choice is the one with just "leaf" without any punctuation.

Answer:

B. leaf