Topic: Interchange of Parts of Speech,

Best Answer Explained in Below-:

In the context of the question, we need to identify which word from the options can function as a verb. Among the provided choices: green, orange, red, and blue, only "green" can take on a verb form.

The term "green" can be used as a verb in several contexts, particularly in environmental or agricultural discussions. To "green" something often means to make it more environmentally friendly or to cultivate plants. For example, a person might say they aim to "green" their home by adopting sustainable practices. This usage illustrates how "green" conveys action and transformation.

In contrast, "orange," "red," and "blue" are primarily nouns or adjectives that describe colors, and they do not possess commonly accepted verb forms in English. Although one might argue that these colors could be used creatively in poetic or metaphorical expressions, they do not function as verbs in standard English grammar. Therefore, "green" stands out as the only verb among the options, making it the correct choice.