choose a correct one

[kmsmir04]

Q. After months of research, the CEO has ___ to come to a conclusion on the feasibility of international expansion.

1. yet
2. already
3. finally
4. even

I picked 3 but the answer is 1. I think finally is also fit for the question.

Thanks in advance.

[SoothingDave]

No. If it was finally, it would say "has finally come..." not "to come."

[kmsmir04]

Thank you for reply.

I understand that it would be "has finally come to" if finally was correct for the question.

What I still don't get is that "he has yet to come to ...".

"has to" expresses a strong obligation. So, the sentence is the same as "but he must come to..". It sounds wired to me.