9. For what reason has the American Society for Reproductive Medicine created guidelines to help reduce the number of multiples born as a result of IUI and IVF?
Multiple births are often advantageous to the mother.
Parents of multiples are less likely to want more children.
Twins and quadruplets are often healthier than single births.
Multiples are often plagued with health problems.

i believe it is c: genes for body color and wing size are inherited separately from each parent.

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.  

answer; civil inattention;