Answer:
The correct answer is:
I went to Brookes, the chemist, and HSBC.
Explanation:
We use comma to separate words in a series of three or more items. The use of the comma is obligatory when we introduce a series of three or more concepts, to enumerate them and increase the make the sentence easier to read and to understand.
However, we shouldn’t use a comma if all items are separated or separated by conjunctions (or, and, nor, etc.).
