Best Answer Explained in Below-:

The correct spelling of the word is A) Humorous. This term derives from the Latin word "humor," which refers to a fluid in the body that was once believed to influence a person's temperament. In modern usage, "humorous" describes something that is funny or amusing.

Options B) Humorius, C) HUmoreuse, and D) Humurious all contain misspellings that deviate from standard English conventions. Option B) "Humorius" changes the vowel structure without following common English spelling patterns. Option C) "HUmoreuse" introduces an unnecessary suffix and disrupts the phonetic integrity of the original word. Lastly, option D) "Humurious" adds an incorrect vowel and alters pronunciation, making it unclear and unrecognizable in standard English.

Thus, option A) Humorous is correct because it accurately reflects the established spelling and phonetics expected in English, ensuring clear communication of the idea of something being funny or lighthearted.