Which change in the climate of a location would most likely cause the greatest increase in chemical weathering of local bedrock?

If you are looking at purely chemical weathering, then heavy precipitation in Summer would have to be the answer, as only water would be carried through to the bedrock, the other options would only affect the surface.

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