Final answer:
The measure of ∠7 is 85°.
Step-by-step explanation:
To find the measure of ∠7, we need to look for the information given in the question. The question mentions a fence on a hill with vertical posts L and M holding parallel rails N and P. The measure of ∠10 is given as 85 degrees. To find the measure of ∠7, we need to use the fact that alternate interior angles are congruent.
Since ∠10 and ∠7 are alternate interior angles, they are congruent. Therefore, the measure of ∠7 is also 85 degrees. Hence, the correct answer is (d) 85°.