Select the option that identifies the error and supplies the correction for a line from a Research Report: In…

Question

Select the option that identifies the error and supplies the correction for a line from a Research Report: In many low and middle income countries, health coverage has improved dramatically in the last two decades, but health outcomes may not.

Accepted Answer

## Model Answer **Option C — Error: may / Correction: have** The sentence requires parallel structure: "has improved… but health outcomes have not" (ellipsis of 'improved'). "May not" breaks the parallelism. ## Explanation The sentence contrasts two ideas: health coverage **has improved**, but health outcomes **have not** (improved — implied). The auxiliary verb must match the tense and structure of the first clause for grammatical parallelism. "May not" introduces uncertainty/modality, which is incorrect here; "have not" correctly completes the parallel structure with the omitted main verb *improved*.

English Language & Literature — CBSE Class 10 board question