The word which which is underlined is "as often as needed". This is an adjectival phrase. The word that is modified is "lend". (Option B)
An adjectival phrase is a phrase which modifies a noun, a verb or even an adverb.
Hence, it is right to state that the word which which is underlined is "as often as needed". This is an adjectival phrase. The word that is modified is "lend".
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