Even if we grant that the fetus is a person, abortion is sometimes morally acceptable. 

Abortion is always permissible, because the fetus is not a person and has no right to life

The fetus becomes a person at 12 weeks gestation, which is why abortion past that point is always wrong

The fetus is a person from the moment of conception, which is why abortion is always wrong

Abortion is always wrong because the fetus is a person with a right to life