A number between 0 and 1 is written in a scientific notation. Which which of these describes the exponent? A: fraction b: negative integer

A) A fraction

A number between 0 & 1 would undoubtedly be a fraction. Scientific Notation denotes a fraction/decimal by 10 to the power of however many places the decimal is at from the number.

An easy way to remember this is by thinking of it as a decimal, not a fraction:

0 <.5 < 1