Select the appropriate meaning of the idiom “An important day”:

🧠 Explanation:

The idiom “An important day” is commonly referred to as a “Red-letter day”, meaning a day that is memorable, significant, or special. Historically, calendars marked notable days in red ink to distinguish them from ordinary days. Such idioms are often tested in English language sections of exams like PPSC to assess comprehension, vocabulary, and the ability to interpret figurative expressions. Recognizing idiomatic meanings helps in understanding literature, effective communication, and reasoning questions. Examples include birthdays, anniversaries, national holidays, or personal achievements, all of which can be described as red-letter days due to their importance or uniqueness.