Answer:
B. food AND pet salamander
Explanation:
Consider the question: "What kind of food do pet salamanders eat?"
Letter A leaves out FOOD, which you need to know the answer.
Letter be leaves out one of the words, either Food OR Salamander, which causes the same problem.
Again, the problems is repeated in D, since you have to use pet OR salamander and wild salamanders might have a very different diet.
The logical conclusion is letter B, since the 3 words (food, pet, and salamander) are needed for you to obtain the information that you want.
