Based on the question and the options provided, the best response to Orlando's friend's question "¿Pasaste por la floristería y la pescadería?" would be:
a. Si, pero sólo compré flores.
Explanation:
1. Orlando's friend asked if he passed by the florist's shop and the fish market.
2. Orlando's response confirms that he did pass by, but he only bought flowers. This indicates that he visited the florist's shop and made a purchase there.
3. The other option mentioning taking his friend to get a driver's license is not relevant to the question asked about visiting the florist's shop and the fish market.