How does the sun’s average density compare to water’s density?

If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible

Me with these questions image attached

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes