For which of these questions could a testable hypothesis be developed? Check all that apply
Does a flu shot hurt worse than a pneumonia shot?
Will breeding a red rose with a white rose make a pink rose?
Are pecans better tasting than walnuts?
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?

to stay where they were until m sent for

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; the intervening variable;

answer; sellers provide full and accurate information about loan terms;