ANSWER
The sample space is 16
EXPLANATION
The number of sample space in an event is given by
[tex]4^{n}[/tex] where n is the number of times we spin the spinner.
Since the spinner has 4 equal sections that is why we write 4 as the base.
Hence the number of sample space is
[tex]4^{2}=16[/tex]
The correct answer is option D