Chemistry Lab Safety Practice Test

The question tests understanding of where to access standard chemistry reference books in a campus setting. The two locations listed—Pius XII Library and the Department of Chemistry Room 115—show that both places are designated access points for the Merck Index or Condensed Chemical Dictionary. This makes the option that names both sites the best choice, because it accurately reflects the given access information: two physical locations where you can consult these references.

The other options point to only one location or to online access, which does not match the instruction that two locations are listed. You might find online access as well, but the prompt specifically asks for the two listed physical access points, which are the library and the department’s room.