Choose the correct word to complete the sentence: "The fireworks exhibition had awesome ______ on the crowd and the night sky."

Introduction / Context:
This question checks your ability to distinguish between easily confused English words, especially "affect" and "effect". These words appear very frequently in essays, reports, and exam answers. Using the wrong one can change the meaning of a sentence or make the writing look careless. The sentence given is about a fireworks exhibition and its impact on the crowd and the night sky.

Given Data / Assumptions:
- Sentence: "The fireworks exhibition had awesome ______ on the crowd and the night sky."
- We need a noun that describes the impact or result produced by the exhibition.
- Options include "affects", "defects", "effects", "show", and "results".

Concept / Approach:
In standard usage, "effect" is usually a noun meaning result, outcome, or impact, while "affect" is usually a verb meaning to influence. The structure "had awesome _____" requires a noun object. Therefore, the correct word is "effects". It expresses that the fireworks created powerful visual and emotional results for the crowd and on the sky. The other words either have different meanings or do not fit grammatically.

Step-by-Step Solution:
Step 1: Identify the verb phrase "had awesome" and recognise that it must be followed by a noun.
Step 2: Recall that "effect" (usually a noun) means result or impact, while "affect" (usually a verb) means to influence.
Step 3: Change "effect" to plural "effects" to agree with "awesome" describing several kinds of impact, such as colours and emotions.
Step 4: Confirm that "The fireworks exhibition had awesome effects on the crowd and the night sky" sounds natural and correct.

Verification / Alternative check:
You can test each option in the sentence. "Had awesome affects" is wrong because "affects" is a verb and cannot be used as the object of "had" here. "Had awesome defects" changes the meaning to flaws, which does not match a positive description. "Had awesome show" is ungrammatical, because "show" is a countable noun and would need an article. "Had awesome results" is grammatically possible but does not capture the usual collocation used for fireworks, where "effects" is the common word for visual impact.

Why Other Options Are Wrong:
- affects: usually a verb, not a noun in this context.
- defects: means faults or flaws, which is negative and does not match "awesome".
- show: would require an article such as "an awesome show" and still would not pair smoothly with "had".
- results: possible but less natural than "effects" when describing visual and emotional impact of fireworks.

Common Pitfalls:
Many learners mix up "affect" and "effect" because they sound similar. A useful memory aid is: "Affect" is an Action (verb) and "Effect" is an End result (noun). Remembering this simple pattern helps you choose correctly in most contexts.

Final Answer:
The correct word is "effects": "The fireworks exhibition had awesome effects on the crowd and the night sky."