<h2>
Hello!</h2>
The answer is:
b. 
<h2>
Why?</h2>
The centripetal acceleration or radial acceleration is present when an object is moving to describe a circular path. The centripetal acceleration is always perpendicular to the direction of the velocity and going inwards and towards the center.
The centripetal acceleration can be calculated using the following equation:

From the statement we know that:

So, calculating we have:

So, the correct answer is:
b. 
Have a nice day!
Answer:
absorption of blue light by the Earth atmosphere
Answer:
You sneeze
Explanation:
I think so, when the cilia clears the germs you sneeze
Answer:
Environment consists of all living and non-living things which surround us. Therefore, the basic components of the environment are: 1. Atmosphere or the air 2. Hydrosphere or the water 3. Lithosphere or the rocks and soil 4. The living component of the environment or the biosphere II.
Explanation:
A) 12 is the answer because sex cells have half as many chromosomes as the offspring will have, half from the mother, the other half from the father.