Fill in the blank with the correct modal. Jimmy ________ have seen me…

The correct answer is Option (3) → couldn't

Complete sentence: Jimmy couldn’t have seen me, because he walked past without greeting me. Jimmy walked past without greeting the speaker. From this, the speaker is sure that Jimmy did not see him.

Option	Meaning and use	Example
(1) ought to	“Ought to have + past participle (V3)” says what was right or expected but did not happen. The reason part here is proof for a guess, not a complaint.	You ought to have told me about the change in plan.
(2) might	“Might have + V3” says that something perhaps happened. Walking past without greeting points to the opposite, that he did not see.	Ravi might have missed the train, as he is still not here.
(3) couldn't (answer)	couldn’t have + V3: we are sure that something did not happen in the past	Sita couldn’t have taken the bus, because she reached home on foot.
(4) could	“Could have + V3” says that something was possible. The reason given shows that Jimmy did not see the speaker at all.	You could have won the race if you had not fallen.