It's A. I don't know why, but I got it right, so
<h3>Questions: </h3>
What does a knickpoint indicate on a river profile
<h3>Answer: </h3>
A knickpoint is a steep section of a river's profile that can range in size from a single waterfall to a multi-kilometer high-gradient region.
The answer should be “B”, considering there is grain in cereal
No not really but they emerge and do so near each other