Adangling modifier occurs when a modifier
a. is used at the end of a sentence.
b. appears to modify something it shouldn't.
c. is not set off from the sentence with a comma.
d. does not contain a complete thought.

A dangling modifier occurs when a modifier appears to modify something it shouldn't.

Explanation:

In general, modifiers are words that change, describe, expand or explain a word as a part of the speech, they are adjectives, adverbs, prepositions, etc.. More specifically a dangling modifier is a modifier that is not in its correct collocation and may create confusions or misunderstandings according to which word is it modifying.

you did not put the article. so i cannot answer the question.

d.) gold is the correct answer