Final answer:
A rat on average consumes about 5-7 grams of food per 100 grams of body weight per day, corresponding to option A of the provided choices.
Step-by-step explanation:
The question asked is related to the eating behavior of rats and their food consumption relative to their body weight. On average, a rat consumes about 5-7 grams of food per 100 grams of body weight each day, which corresponds to option A in the multiple-choice list provided.
This information may be used in various biological studies, including nutritional experiments as mentioned in the reference information where students Linda, Tuan, and Javier are testing the effects of different formulas on weight gain in laboratory rats. The correct option is A.