True .
Our bodies don't feel that urge of water in cold conditions, we become dehydrated without knowing it . In hot conditions we sweat .
Answer:
I would say B) Safety
Explanation:
Maslow's Hierarchy of Needs? Then it should be safety since you are being sheltered from harm, making you safe. Physical needs maily involve the basics, like food or water.
Absorbance =

100÷%T
A=

2.105 <=>
<=> A=0.3233
To 47.5%T corresponds 0.3233 absorbance.