Final answer:
Without the actual underlined sentence from "At Your Fingertips," it is not possible to determine the type of clause it is. A clause must contain a subject and a verb, and can be either an independent clause, which stands alone as a complete sentence, or a dependent clause, which cannot. Option number d is correct.
Step-by-step explanation:
The type of clause in the underlined sentence from "At Your Fingertips" cannot be determined without the provided sentence itself. In general, a clause is a group of words with both a subject and a verb. Clauses can be classified into two major categories: independent and dependent clauses.
An independent clause can stand on its own as a complete sentence, such as 'Hand me that socket wrench.' A dependent clause, however, cannot stand alone and begins with a subordinating conjunction like 'if,' 'although,' or 'because.' An example of a dependent clause is 'If you chase two rabbits.'
Without the actual underlined sentence provided, it is impossible to accurately identify whether it is a noun clause, adverb clause, relative clause, or independent clause (Options A, B, C, or D).