He sent for the doctor because I am ill. No error.
Tripura Public Service Commission - 2019,
Answer: D
The key treats the sentence as correct: No error.
The rule of the sequence of tenses (a past tense in the main clause pulls the verb of the dependent clause into the past) governs reported clauses, such as He said that I was ill. A clause of reason introduced by because states a fact in its own right and can take whatever tense the sense requires. If the speaker is still ill now, He sent for the doctor because I am ill is grammatical: the sending is past, the illness is present.
Section C, because I am ill, is the tempting answer for anyone who applies the sequence of tenses to every subordinate clause; because I was ill would also be correct, but the present is not an error. He sent and for the doctor are idiomatic as they stand.
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