Answer: D) I am going to go to the store, shop for ingredients, then cooking will begin.
Explanation: Parallelism is a literary device that consists in the repetition of the grammatical structure of a word or a phrase, in order to create symmetry in the text. From the given sentences, the one that lacks parallel structure is the corresponding to option D, because there is a lack of consistency in the verbal forms ("I am going to go", "shop" and "cooking"), an example of how we could correct this sentence would be "I will go to the store, shop for ingredients and then I will begin to cook."
