In this excerpt from Allen Ginsberg's "A Supermarket in California", the speaker of the poem and his imaginary companion are (A.) sampling items but not paying for them.
In the poem, the speaker and his imaginary companion are tasting artichokes, which are round green vegetables that have fleshy leaves. They are sampling them in the supermarket without 'never passing the cashier', which means they are eating them without giving the money to the supermarket's employee; therefore, without paying for them.