Answer:
1.6 pF
Explanation:
The capacitance of a parallel-plate capacitor in air is given by:

where
is the vacuum permittivity
A is the area of each plate
d is the separation between the plates
In this problem we have:
- Separation between the plates: d = 5.00 mm = 0.005 m
- Area of the plates: 
Therefore, the capacitance is

A. Ask other people for their opinion. :)
If you press on your arm force is applied work done is if it moves.
One answer could be if I was to press my hand on a table.
Have a great day!