Short, hairlike structures that protrude from the surface of a cell and are packed in tight rows are called select one:
a. flagella.
b. microtubules.
c. microfilaments.
d. cilia.

D. cilia

Explanation:

Cilia: short hairlike structures that protude from the surface of a cell

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

the answer would be b.:

880,000.

hope it ,

bioteacher101