To convert 0.75 to a fraction, we can express it as:
\[ 0.75 = \frac{75}{100} \]
Now, we can simplify this fraction:
- Find the greatest common divisor (GCD) of 75 and 100, which is 25.
- Divide both the numerator and the denominator by 25:
\[ \frac{75 \div 25}{100 \div 25} = \frac{3}{4} \]
So, the simplest form of 0.75 as a fraction is:
\[ \frac{3}{4} \]
Thus, the correct response is:
3/4.