The answer to this question is B, Jimmy Carter.
The correct answers are:
(B) Poverty for most Russians
(C) Food shortages
(D) The writing of Karl Marx
The statement that best explains the student observation is water is not a smooth surface after the rock is dropped in the pond.
An observation is refers to a process where someone observes a subject ongoing behavior in a natural situation.
Here, the observation of the situation takes places immediately when the student drops the stone into the water.
Hence, the Option B is correct because the statement that best explains the student observation is water is not a smooth surface after the rock is dropped in the pond.
Read more about observation
<em>brainly.com/question/9249399</em>
On the top darker pink is better and on the bottom the black one
