Fill in the blanks with appropriate Articles:

It was _____ honour to meet _____ professor.

an, the

The correct answer is Option (1) → an, the

• "An honour": The article "an" is used before words that begin with a vowel sound, and "honour" starts with a silent "h," making the first sound a vowel.
• "The professor": The article "the" is used when referring to a specific or known noun, such as "the professor" in this context.

Correct sentence:
"It was an honour to meet the professor."