Over time, adult height of American-born men of European
origin
Group of answer choices
a. continuously increased as diet improved, reaching
modern levels by about 1900.
b. slowly increased until about 1930, then fell
dramatically, then increased to near present levels.
c. rapidly increased until the mid 1800s then remained
the same until the present.
d. changed very little, because height is mostly genetic
and few new genes were introduced into the population.