a) Death from pregnancy is rare. Death that can actually be averted by an abortion is extremely rare. People that don't feel that in those extremely rare circumstances that you should save the patient you can save are even more rare than that.
b) Who doesn't "support birth control?" People should buy products to prevent pregnancy and use them if they intend to have one specific type of sex and don't want to become pregnant. This view is essentially universal.
c) You don't have to be a socialist to support the actual human right to life.
d) None of this has anything to do with the topic of this thread.