The following sentence has been divided into parts. One of them may contain an error.
Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.
A celestial body or astronomical object is / a naturally occurring physical thing, association, / or configuration that happens in the visible universe.

Correct option is A

The given sentence is grammatically correct, and there is no error in any part.

Explanation:

• The sentence "A celestial body or astronomical object is a naturally occurring physical thing, association, or configuration that happens in the visible universe." is correct as per standard grammar rules.
• The verb "happens" is appropriately used here because astronomical configurations can change or take place in the universe over time.
• The conjunction "or" correctly links three different noun phrases ("a naturally occurring physical thing, association, or configuration"), making the sentence logically structured.

Correct sentence remains:

"A celestial body or astronomical object is a naturally occurring physical thing, association, or configuration that happens in the visible universe."