Here is your answer
A) [tex]\huge{2}^{2}[/tex]
REASON :
CONCEPT USED: [tex] \frac{{a}^{m}}{{a}^{n}} [/tex]
= [tex] {a}^{m-n} [/tex]
So,
[tex] \frac{{2}^{-3}}{{2}^{-5}} [/tex]
= [tex] {2}^{-3-(-5)} [/tex]
= [tex] {2}^{-3+5} [/tex]
= [tex] {2}^{2} [/tex]
HOPE IT IS USEFUL
