In the following questions, three sentences have been given in which a word has been highlighted. Find out the sentence/s in which the highlighted word has been used incorrectly and choose the answer from the given options. If all the sentences use the highlighted word correctly, choose option E as your answer.
I. The new climate policy proposes stringent emission limits for manufacturing units operating near urban residential zones.
II. Why did the editorial board approve such an equivocal statement that left readers completely confused about the journal's official stance?
III. High-performing athletes are expected to remain indolent during intense training sessions to maximize their endurance levels.