Topic: Idioms & Phrases,

Best Answer Explained in Below-:

The term "green horn" refers to someone who is inexperienced or naïve, particularly in a specific field or activity. This idiom originated in the early 20th century and is often used in contexts where individuals are new to jobs, responsibilities, or experiences that require skill and knowledge. The word "green" conveys youth or freshness, suggesting a lack of maturity or experience, while "horn" adds to the imagery of someone who is still in the early stages of their life or career, much like a young animal still growing its horns.

Among the provided options, A) "An inexperienced man" aligns perfectly with this definition, as it directly addresses the characteristic of being new to a particular environment or role. Option B) "A trainee" might also seem relevant, but it implies structured learning rather than simple inexperience. Options C) "A soft-hearted man" and D) "An envious lady" stray far from the original idea of lack of experience. Therefore, the most accurate interpretation of "green horn" is indeed A) "An inexperienced man."