Correct option is C
The correct option is (c).
The sentence “She submitted the report...” is in simple past tense. We must convert it into present perfect tense, which is used to show that an action has been completed, but it has relevance to the present or the exact time is not specified.
Structure of present perfect: Subject + has/have + past participle (V3) + object.
Here, the past participle of “submit” is submitted. Therefore, the correct conversion is: “She has submitted the report without checking the references.”
Example: He has finished his homework.
Why other options are incorrect:
- (A) is present continuous (“is submitting”), showing an ongoing action, not present perfect.
- (B) is past perfect (“had submitted”), used for an action completed before another past action.
- (D) is simple present (“submits”), showing habitual action, not completed action.