Select the option that will improve the highlighted part of the sentence.
Not everything that happen in natures is due to global warming alone.

Correct option is D

The correct substitution of the highlighted words is (d) that happens in nature.
Explanation: The subject "everything" is singular, so the verb must be in singular form – "happens" not "happen".
Also, "natures" is incorrect because "nature" is an uncountable noun and does not have a plural form.
Correct sentence: Not everything that happens in nature is due to global warming alone.
Grammatical rule used:
· Subject-Verb Agreement: A singular subject takes a singular verb.
· Uncountable Nouns: Words like "nature" are used in singular form.
· Example: Everything that happens in life teaches us something.