What factor about america has contributed to the evolution of american english?
a. the immigrant roots of its population.
b. the diversity of its geographic features.
c. its large physical side.
d. its democratic form of government.

what can best be inferred from this excerpt is the pittsburgh pirates had a winning season in 1972., the specific information about the year is provided in the excerpt.

the other options are not correct because we can not assure that roberto clemente was the best since we don't know the information about the other players, there are no mentions about any specific fan either and it is clear that not many batters can make it to   3000 hits because it is mention as a high number.

in june, we will have been married for eighteen months. (i am assuming this is what you want? the sentence, as you have presented it, is grammatically incorrect--   you want it corrected, yes? )