So, as you know, when a sperm cells (Male sex cell) meets the Egg cell (Female Sex Cell) it forms something called a zygote. And from that point on, the egg cell reproduces more and more (making more cells) in a type of cell called a stem cell, which can be used for anything the body needs. The newborn babies keep these cells up until birth or the incubation (growth of the baby in the mother's uterus), and then they are ready to be born.
That would be electric charge
For the first one I’d say D
The answer for the 2nd one is C.
Heat energy is absorbed when boiling point comes
Breaking bonds takes energy, forming bonds releases energy
If you break more bonds than you form it would be an endothermic reaction