The underlined phrase 'now' modifies the verb 'is' in the sentence, indicating the timing of the product's availability. It does not modify the noun 'product' or any of the other options. Understanding how adverbs function in relation to verbs is key to grasping sentence structure. ;
The underlined phrase 'now' modifies the verb 'is' in the sentence, indicating the timing of the product's availability. It specifically tells us that the product is available at this moment. Therefore, the correct choice is option C, which represents 'now.'
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