Final answer:
The accurate statement about the Presidents of the United States is that they D. have been either Democrats or Republicans.
Step-by-step explanation:
According to the provided information, statement all have been either Democrats or Republicans is an accurate description of the Presidents of the United States. Historically, the presidency has been dominated by these two major political parties. However, it is important to note that there have been presidents who were not affiliated with either of these parties, such as George Washington who had no party affiliation, and some presidents who belonged to minor parties.