Ireland's nickname "the emerald isle" comes from a) their main export, emeralds. b) their flag, which is solid green. c) the algae that grows off the coast of dublin. d) the rolling green hills throughout the countryside.

i thank it is A but if it is not right sorry

what of the following? i don't know about you but i see no multiple choice answers.

- "a nonrestrictive clause functions as a modifier to a noun (that is an object, person or concept). these clauses can be described by the following three options: it is set off by comas, it contains a subject and a verbs and it adds nonessential information to the sentence.

for example, in "here is bill gates, who confounded microsoft software company" we can identify "who confounded microsoft software company" as a nonrestrictive clause modifying the noun bill gates. this clause can be describes as a nonrestrictive clause because it is separated by a comma, it adds nonessential information to identify who bill gates is and it must contain both a subject (who) and a verb (confounded)."