Yes, but only during the first 20 weeks, same as a woman.
Yes, but only during the initial period when a non-invasive technique works.
No, but he should have the right to be legally relieved of all responsibility.
NO! Only the woman has this right and he remains responsible.
I oppose all abortion, so neither have the right.
I Don't Know.
Like I said, the only way this would be fair is if you tell her this before the sex act occurs. Then she decide if that's a chance she is willing to take, instead of waiting until she already has her child growing inside her.