The correct option is B Life will be made much easier by this product.
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The correct answer is ‘Life will be made much easier by this product.’ In passive voice, the receiver of the action ‘Life’ appears first in the sentence. It is followed by ‘will be’, the past participle of the verb ‘make’, ‘made’, the phrase ‘much easier’, preposition ‘by’ and the doer of the action ‘This product’.