The correct answer is
c) very small and very large
Let's see this with a few examples:
1) if we have a very small number, such as
[tex]0.0000000001[/tex]
we see that we can write it easily by using the scientific notation:
[tex]1\cdot 10^{-10}[/tex]
2) Similarly, if we have a very large number:
[tex]10000000000[/tex]
we see that we can write it easily by using again the scientific notation:
[tex]1 \cdot 10^{10}[/tex]
