The direct object of a verb is the direct recipient of an action represented by the verb.
What Does That Mean?
It’s who or whatever’s on the business end of an action, like when you see your irate classmate take their keys to the side of your history teacher’s car (the car here getting the brunt of the classmate’s rage)
EX: Okay, so I tried some of Trina’s cooking, and you know what? Not bad at all, for someone who supposedly never touched a pot or pan in her life. Given she polishes her technique a bit and learns some of the basic stuff, she’ll make an excellent chef