Here's why:
* Verb: It describes an action (the act of forming a mental picture).
* Transitive: It requires a direct object to complete its meaning. You need to imagine *something*.
Examples:
* "Imagine a world without war." (The direct object is "a world")
* "Can you imagine what it would be like to fly?" (The direct object is "what it would be like to fly")
Let me know if you'd like to explore other language features!