Final answer:
The result of the expression is 0.8.
Step-by-step explanation:
The result of the expression float 4/float 5 is 0.8.
When we convert the numbers 4 and 5 to float data types, we can perform a float division operation. The float division of 4 divided by 5 is 0.8.
Therefore, the correct option is a) 0.8.