For which of these questions could a testable hypothesis be developed? Check all that apply.
O Does a flu shot hurt worse than a pneumonia shot?
O
Will breeding a red rose with a white rose make a pink rose?
Are pecans better tasting than walnuts?
O Will practice help improve your reaction time?
Whose pulse rate increases more after running up and down a flight of stairs, that of an adult or child?

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

i think its the first one

it's c. (to reduce the greenhouse effect/carbon gasses)

in addition to spreading humanist ideas, erasmus has contributed to criticism of corruption in the church.