Answer:
Pattern as in texture is easy to see any flaws in your 3D design.
Explanation:
To solve this problem it is necessary to apply the concepts related to the heat exchange of a body.
By definition heat exchange in terms of mass flow can be expressed as

Where
Specific heat
= Mass flow rate
= Change in Temperature
Our values are given as
Specific heat of air



From our equation we have that


Rearrange to find 

Replacing


Therefore the exit temperature of air is 53.98°C
I dont know the answer to this
The answer to your quesition is b