Answer:
Our limbs, such as our arms and legs, grow basically at the same time and to the same length. ... Scientists are still unsure of how exactly human arms, legs, ears, or lungs grow in such a symmetrical way.
I think it is chromosomal abnormalities
Umbilical Cord aka where he will get all the food from
the answer is D, also known as glandular fever or mostly referred to the kissing disease when your immune system is fighting off that virus it causes your lymph glands to swell
