Answer:
B :)
Explanation:
:) JUST TRUST ME I GOT IT CORRECT
B: Extension Lines! You could have just searched this up on google
Because although they cannot see it, they can see it's influence on objects that can be seen, and it's effects.
Answer : The correct option is, (c) 
Explanation :
First we have to calculate the energy or heat.
Formula used :

where,
E = energy (in joules)
V = voltage (in volt)
I = current (in ampere)
t = time (in seconds)
Now put all the given values in the above formula, we get:


Now we have to calculate the heat capacity of the calorimeter.
Formula used :

where,
C = heat capacity of the calorimeter
= initial temperature = 
= final temperature = 
Now put all the given values in this formula, we get:


Therefore, the heat capacity of the calorimeter is, 