The first attempts by the united states at expansion in the pacific were focused on

a. the philippines.
b. alaska and japan.
c. hawaii and samoa.
d. china and japan.

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.

answer; self-serving bias;