According to the reading reconstruction what is the definition of reconstruction

an act of reconstructing U.S. History. the process by which the states that had seceded were reorganized as part of the Union after the Civil War.

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.

i honestly have no idea