C
It can’t be A because, obvious.
It can’t be B because he’s advocating for third parties.
It won’t be D because he says nothing about the constitution nor banning political parties.
C
what: what happened? what was the main event? hoped this helped
President Reagan did not just attack the Soviets with military spending; he also attacked their economy. The United States isolated the Soviets from the rest of the world economy, and helped drive oil prices to their lowest levels in decades. Without oil revenue to keep their economy solvent, the Soviet Union began to crumble.
The amount of rain falling on the cactus plants.
Answer: Option C
<u>Explanation:</u>
Here, the independent variable is the amount of rain that makes the cactus plant grow taller. Control is treated the same as all the rest of the samples, except that it is not exposed to variables that are influenced.
In most experiments, it is important to perform a trial with the independent variable, at a special locale for comparison with the other trials.
The control group consists of all trials where the independent variable is left in its natural state. These trials provide a basis for comparison and ensure that any changes observed in the height of cactus plant are in fact caused by the amount of rain.
Answer:
U.S., Saudi Arabia, Russia, Canada, and China
Explanation:
