Correct option is C
The correct answer is
"That."
Detailed Grammar Explanation:
·
"Those" is incorrect because it refers to
plural nouns, while
"Diwali celebration" is singular.
·
"That" is used for
singular nouns and is the correct choice.
Correction:
· "
That Diwali celebration was wonderful."
Example
· "
That dress looks amazing on you!"