I would say A. Because c and d r very dangerous if u think about it. And b is right in some situations. But if u do a then people can see whts going on if something happened because of the light. and it is safe. If wrong let me know. :D
I believe it's either microwaves or x-rays
I studied this last year
<span>Weight
gain occurs either through intentional or unintentional way. Intentional way of
weight gain is where an individual is over eating or having meals that have
high calories which makes a person obese. The unintentional way of weight gain
is when an individual is experiencing medical problems like urinary problems,
endocrine system problems like hormonal imbalances and the likes, due to
stress, etc. An individual who are having a weight gain problem should consult
a doctor immediately to check the cause of the weight gain and to solve the
problem. </span>
There are many different systems involved in when we exercise, the three main ones are the Respiratory system which is involved in breathing the circulatory system which is about circulation of blood around the body and finally the muscular system and finally the Muscular system which is about how we move.
Explanation:
edg2021
The answer is 9 . hope that helped! have a great day/night!
