A population of land snails colonized a field of light-colored grasses. At first, the population contained two types of snails, one with brown bands on their shells and another with yellow bands on their shells, as shown in the figure below. After 10 years, most of the snails had shells with yellow bands.

What is the most likely reason that there are more yellow-banded snails present in the grassland?
	F	The yellow-banded snails were less visible to predators.

	G	The yellow-banded snails were better at acquiring food.

	H	The brown-banded snails were infected more often by parasites.

	J	The brown-banded snails were too slow to escape from predators.