Sean enjoys studying the stars. he used a photometry tool to calculate several stars' apparent magnitudes (how bright a star looks in the sky). he then researched the stars' distances from earth. he recorded his results in the table below.

star
apparent
magnitude
distance from
earth
sirius a
-1.47
8.6 light-years
alpha centauri a
-0.01
4.4 light-years
rigel
0.12
770 light-years
procyon
0.34
11 light-years
alpha centauri b
1.33
4.4 light-years

what conclusions can sean draw from his chart?
a.
a star's apparent magnitude decreases if it is very close to another star.
b.
a star's apparent magnitude decreases as its distance from earth increases.
c.
a star's apparent magnitude is not directly related to its distance from earth.
d.
a star's apparent magnitude increases as its distance from earth increases.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."