Answer:
d. Less than 5.0
Step-by-step explanation:
"Less than 5.0" is the option that best describes the pH of acid rain, because the pH of acid rain is near 4.
The pH between 7.1 and 8.0 wil be basic.
Equal to 7.0 will be neutral.
And the pH between 6.0 and 6.9 is near the neutral value.