Final answer:
The next appointee to the commission can be a democrat, a republican, or an independent.
Step-by-step explanation:
The subject of this question is Social Studies. This question is about the composition of a commission and the political affiliation of its members. Based on the information provided, the next appointee can be a democrat, a republican, or an independent (option B). This is because the commission currently consists of 3 Democrats and 3 Republicans, and there is no requirement in the question that specifies the political affiliation of the next appointee.