Final answer:
The pair of words that correctly completes the sentence is 'cocino, lo' in option B.
Step-by-step explanation:
The correct answer is option B.
The pair of words that correctly completes the sentence is cocino, lo. In Spanish, the verb 'cocino' means 'I cook' and it agrees with the first person singular 'yo' (I). The direct object pronoun 'lo' is used to refer to the apple pie (pastel de manzana) that is being cooked.
For example, the complete sentence would be: Yo cocino el pastel de manzana, lo cocino. (I cook the apple pie, I cook it.)
Therefore, option B is the correct choice.
Learn more about Sentence completion in Spanish