To convert 0.75 to a fraction, we can write it as:
\[ 0.75 = \frac{75}{100} \]
Next, we simplify the fraction by dividing both the numerator and the denominator by their greatest common divisor, which is 25:
\[ \frac{75 \div 25}{100 \div 25} = \frac{3}{4} \]
Thus, 0.75 in simplest form is:
\[ \frac{3}{4} \]
So the correct response is:
Start Fraction 3 over 4 End Fraction.