Answer:
(C) Controls
Explanation:
The definition of a control variable in an experiment is a part of it that is experimented, but it is purposefully kept the same throughout. If it is (C), why can't it be the others? Well, it cannot be (A) because it the dependent variable is the thing that is being measured in the experiment, so it will change over time, and not going to be kept the same. Lastly, it cannot be (B) theories because theories are always changing. Theories, due to new scientific knowledge, is going to be different as scientists learn new things. Therefore, (C), controls would be your answer. Hope this helps!
Gabe <- Answered the problem on Brainly <-
Answer:
Your answer would be A.
Explanation:
You should change suns' to sun's. You should use the apostrophe to show possession. In order to show possession with a singular noun, you should add an apostrophe plus the letter -s. As you know, the sentence is referring to the sun, the star of our galaxy. Considering that the noun is singular (sun), the possession should be shown by adding the apostrophe and the letter -s to the noun (see 1).
1) The sun's energy heats the Earth's surface
Perseus is the main character