How do you use an exponent to represent a number such as 16

 For this case we have the following number:
 16
 We can rewrite the number in different ways using exponents.
 For example, an equivalent way is:
 
 Another equivalent way is:
 
 Another equivalent way is for example:
 
 
 The following ways are ways to use exponents to write the number 16:
 

The answer maybbe c