Drug-resistant populations of microbes arise when
a. synergy between medication occurs
b. exposure to drugs causes mutations that produce resistance
c. resistant cells become numerous in a population due to their greater vigor
d. exposure to drugs selectively kills sensitive cells, allowing overgrowth of resistant cells
e. the patient becomes immune to the drug

The correct option is D. Drug-resistant populations of microbes arise when  exposure to drugs selectively kills sensitive cells, allowing overgrowth of resistant cells.

Explanation:

Drug- resistance can be described as a mechanism through which an organism can overcome the effect of a drug.

Usually, exposure of a drug again and again to a population of microbes will make the microbes resistant to that drug. The cells of the microbes undergo some change to overcome the effect of that particular drug.

A population of drug-resistant microbes might occur when the sensitive microbes get killed by the drug and resistant strains remain alive.

i tried the eyeshadow trick you told me about and it worked so good i i did a yellow going into orange colors and it was bright and you could see it on my eyes

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)