Answer:
Competition occurs when <em>(A) two or more organisms need the same resource.</em>
Explanation:
I dont think it could be (B), (C) or (D) because those don't really make sense.
Average speed (aka average velocity) is the change in displacement (distance) over the chance in time.

The average velocity of the baseball is 15 meters/sec
It's polar because electronegativities of F and O are different.
At the sea shore there is less water so the sun shines directly in them, deeper. there is more water. so their bodies are more in the water therefore the sun is less in their bodies.