PLEASE HELP! Which statements are true?

A. farsighted person’s cornea and lens refract light too much.

B. nearsighted person’s cornea and lens do not refract light enough.

A person whose eyes are blue has irises that reflect blue light.

C. Even people with perfectly working eyes have a blind spot in each eye.

D. lens with cataracts absorbs or scatters light that it should refract.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.