The verbs 'calculated' and 'measured' are eliminated as its use makes the sentence passive. The sentence should be active as the action is done on the object 'merits of electric vehicles'. The preposition 'against' indicates that the consumers are comparing the merits of electric vehicles and gas-powered vehicles. So, among the remaining options, 'weighing' (assess the nature or importance of, especially with a view to a decision or action) is the most appropriate choice. Other options don't convey the proper idea of the sentence.
Hence, option (e) is the correct answer.
Note:
Voice of a sentence - Depending upon the emphasis we want to lay we use a particular voice in a particular context. We use active voice to lay emphasis on the doer of the action while we use passive voice to lay emphasis on the receiver of the action.
Example:
Active- Radha will work. (emphasis on Radha)
Passive- Work will be done by Radha. (emphasis on Work)
Study Notes
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