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<li>(Underlined) Contrasting with (A) (Underlined) most other (B) fifteenth century rulers, Portuguese kinds (underlined) could count on (c) the support of the aristocracy (underlined) in any (D) overseas ventures. No error (E) </li>
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<p>It’s an idiom error although I’m not too certain on the correct idiom. Maybe it should read in contrast to or in contrast with, depending on whether or not the two things being compared are similar or dissimilar. You can’t tell fromnthe context of the problem but either way I think it might still be wrong because it lacks the participle in</p>
<p>You dont use contrast with when comparing people, the same thing happens to the phrase ‘opposite to’. Should replace it with unlike or some other phrases.</p>