It ate more food. It was more active. It drank more water. It received more sunlight.
Six puppies were born at the same time. After 6 months, one of the puppies was much heavier than the others. Which of the following is the most likely explanation for difference in size of that puppy?

Options:
- It ate more food.
- It was more active.
- It drank more water.
- It received more sunlight.

It ate more food.