I believe the statement that is true would be B.
Linear.
This is because Fluorine has seven valence electrons, pairing the odd one out in the middle will solve this problem.
It can't be pyrimidal or bent as it doesn't have any lone (unpaired) valence electrons. It can't be a tettrahedral as there aren't four other elements. It couldn't be a planar as there isn't a total of four elements to pair with a central atom.
Hope this helps!
The answer is D. Triple only
I think the answer is
Control centre of the cell
3 subatomic particles in the nucleus
which is proton(24),neutron (28) and electrons(24)