The children are playing in the nearby park.

The correct answer is B. close.

The word “close” means near or nearby. In the sentence “The children are playing in the nearby park,” the word “close” is used to describe the location of the park. The park is near the children, so they can easily walk there to play.

The other options are incorrect because they do not accurately describe the location of the park. The word “different” means not the same. The word “separate” means apart or disconnected. The word “distant” means far away.

In conclusion, the correct answer to the question “The children are playing in the nearby park” is B. close.