Single/multi-choice problem: Which of the following solutions is better for the following goal:
How do you decide what type of fish to keep in an aquarium?

a). To decide what type of fish is best for your aquarium, first consider the size a species of fish will be full grown, and make sure you can safely accommodate it. Then consider things like water chemistry requirements, aggression level, tankmates and dietary needs. b). To decide what type of fish is best for your aquarium, first consider the size a species of fish will be full grown, and make sure you can safely accommodate it. Then consider things like water chemistry requirements, compassion level, tankmates and dietary needs.
a).