The correct option to complete the sentence "vendía los artículos de aseo personal" is:
a) El centro turístico
This means that the sentence would read: "vendía los artículos de aseo personal en el centro turístico."
By choosing this option, you are indicating that the person (or place) mentioned in the sentence was selling personal hygiene items at the tourist center. This option makes the most sense contextually as selling personal hygiene items like toiletries is a common practice in tourist centers to cater to the needs of travelers.
