The beagle is a wonderful pet. It is a medium-sized dog that is sweet and gentle. Like other members of the hound family, beagles are energetic dogs. They thrive on daily walks and play time. Beagles are smart dogs, but they can sometimes be stubborn. Firm and friendly training is
important for every beagle. Given the proper care, beagles are loyal and loving companions.
Which detail best supports the main idea that beagles are good pets?

Explanation:

To identify or class something as being good, such thing or animal as in this case must have exhibited some certain characteristics, this involve by loving, caring, loyal. One or all these characteristics combined will influence our decision to describe an individual or animal as good.

Hence, relating the explanation to the passage above which gives a description of Beagle, a dog of the hound family. The detail from the passage qbkvj best supports the main idea about Beagles being good is the caring and loyal nature of beagles described in the passage.

i'm thinking it would be when compound subjects are joined by or, nor,either-or, neither-nor.