Select the most appropriate option that can substitute the highlighted segment in the given sentence.
It was an horrible day at the office for Roy, but he didn’t allow it to spoil his evening plans.

Correct option is B

The correct substitution of the highlighted words is (b) was a horrible day at the office.
Explanation:
· The article “an” is used before vowel sounds, not just letters.
· The word “horrible” begins with a consonant sound (/h/), so “a” should be used, not “an”.
· Additionally, “It” is the subject, so “was” is correct.
· Hence, “It was a horrible day...” is the grammatically and contextually correct structure.
Grammatical Rule Used:
Use “a” before consonant sounds and “an” before vowel sounds (like apple, honest).
Example:
· Incorrect: He is an honest man. ✅
· Incorrect: He is an university student. ❌
· Correct: He is a university student. ✅
�� Information Booster:
Sound matters more than spelling in choosing a/an. "Honest" starts with a silent "h" — so it sounds like a vowel word.