The most likely factor influencing the time it takes to drive from your house to the library is the distance from your house to the library (D).
Here's why the other options are less likely:
A. Number of books in the library: The number of books in the library has no direct influence on how long it takes to drive there.
B. Number of librarians working: Similarly, the number of librarians working doesn't impact the driving time.
C. Size of the library: The library's size might indirectly affect traffic around it, but it's not a primary factor determining the driving time from your house.
Therefore, the most logical and relevant factor influencing the time it takes to drive to the library is the distance between your house and the library. So, the correct answer is D. distance from your house to the library.