**Explanation:**

In order to explain the correct answer to this question, let's first understand the given options:

Option A: This option is not the correct answer because it does not provide any logical or reasonable explanation for why something happens or exists. It seems to be a random statement without any basis.

Option B: This option is the correct answer because it fulfills the requirement of providing an explanation. It suggests that there is a reason behind why something happens or exists and therefore provides a logical explanation.

Option C: This option is not the correct answer because it simply states an observation or a fact without providing any explanation. It does not address the question of why something happens or exists.

Option D: This option is not the correct answer because it does not provide any explanation. It seems to be a random statement without any basis.

Given the requirements of the question, option B is the only option that provides a logical and reasonable explanation for why something happens or exists. It is important to choose an option that fulfills the requirements of the question and provides a valid explanation.

In conclusion, the correct answer to this question is option B because it provides an explanation for why something happens or exists.