Dallin H. Oaks talks about abortion in General Conference; abortion is "serious sin" and "ultimate act of destruction."
Dallin H. Oaks, "The Great Plan of Happiness," October 1993 General Conference, accessed September 21, 2021
The ultimate act of destruction is to take a life. That is why abortion is such a serious sin. Our attitude toward abortion is not based on revealed knowledge of when mortal life begins for legal purposes. It is fixed by our knowledge that according to an eternal plan all of the spirit children of God must come to this earth for a glorious purpose, and that individual identity began long before conception and will continue for all the eternities to come. We rely on the prophets of God, who have told us that while there may be “rare” exceptions, “the practice of elective abortion is fundamentally contrary to the Lord’s injunction, ‘Thou shalt not … kill, nor do anything like unto it’ (D&C 59:6)” (1991 Supplement to the 1989 General Handbook of Instructions, p. 1).