PLS ANSWER I NEED TO GET A GOOD GRADE THE SUBJECT IS SCIENCE Organisms that require two parents reproduce , while organisms that require only one parent reproduce .
A.
dominantly; recessively
B.
sexually; asexually
C.
recessively; dominantly
D.
asexually; sexually

The teacher is mostly talking about the distillation of a mixture

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.