Question

Cactus spines are produced from specialized structures called areoles, which are a kind of highly specialized branch.

• A. areoles;
• B. areoles -
• C. areoles
• D. NO CHANGE

Answer 1

The correct option is D NO CHANGE

The given sentence consists of two parts, the main clause and the non restrictive phrase that adds extra information about the noun phrase. As a general rule, a comma is used before 'which' when it introduces a non restrictive phrase. Thus, the correct answer must be Option D.

Option A - A semi colon is used between two independent clauses when the coordinating conjunction is omitted.

Option B - The en dash issued to represent a span or range of numbers, dates or time.