He fled where his pursuers could not follow.
The underlined section is

Correct option is B

The correct answer is "an adverb clause". An adverb clause provides information about the verb, in this case, explaining the circumstances under which he fled. It answers "where" in a manner that modifies the verb, indicating location indirectly and conditions of the action.

Information Booster

1. Adverb clausestypically begin with subordinating conjunctions like "where," "when," "because," "if," "although," and provide additional information about the verb in the main clause.
2. The clause "where his pursuers could not follow" answers the question "Where did he flee?" and modifies the verb "fled," which is the key function of an adverb clause.
3. Adjective clausesmodify nouns and begin with relative pronouns like "who," "which," or "that." For example, "The man who is standing there is my brother" modifies the noun "man."
4. Adverb phrasesare groups of words without a subject and verb that modify a verb, adjective, or adverb. They can be simpler than adverb clauses, such as "very quickly" or "in the morning."
5. Subordinating conjunctionslike "where" introduce adverb clauses, indicating relationships such as time, place, condition, or reason between clauses.
6. Adverb clausescan be moved around within a sentence without changing the meaning. For example, "Where his pursuers could not follow, he fled" still retains the original meaning.

Additional Knowledge

• Option (a): "An adjective clause."Adjective clauses modify nouns and provide more information about them. For example, "The bookthat I readwas interesting." In contrast, the underlined section in the question modifies the verb "fled," making it an adverb clause.
• Option (b): "An adverb clause."This is the correct choice. The clause "where his pursuers could not follow" tells uswherethe action of fleeing took place. It provides additional information about the verb "fled," making it an adverb clause.
• Option (c): "An adverb phrase."An adverb phrase is similar to an adverb clause but lacks a subject and a verb. For example, "He ranin the park" is an adverb phrase that modifies the verb "ran," but it doesn’t have a subject and verb structure like the underlined section.