To convert 0.80 to a fraction, we can write it as:
\[ \frac{80}{100} \]
Next, we simplify the fraction:
Both the numerator and the denominator can be divided by 20:
\[ \frac{80 \div 20}{100 \div 20} = \frac{4}{5} \]
Thus, the simplest form of 0.80 as a fraction is:
\[ \frac{4}{5} \]
So, the correct response is:
45 Start Fraction 4 over 5 End Fraction