Choose the correct passive form from the options given below:
When ___________ America ___________?
An action in a sentence can be represented in two ways, namely active and passive voice.
The passive voice always uses the past participle form of the main verb irrespective of any tense. Only the auxiliary verbs depend upon the sentence given in active voice.
The correct answer is A) was, discovered
Option A) is correct as the main verb is used in its third form.
Options B, C, and D are not correct as 'did' cannot be used , the question is of the past and 'America' represents a singular noun respectively.
When was America discovered?