Final answer:
Joseph Biden won the 2020 presidential election and the electoral and popular vote, but Donald Trump refused to accept the results.
Step-by-step explanation:
The correct statement describing the 2020 presidential election and its aftermath is:
B. Joseph Biden won both the electoral vote and the popular vote, but Donald Trump refused to accept the results of the election.
In the 2020 election, Joseph Biden received a majority of the electoral votes (306) and the popular vote (81 million). However, Donald Trump contested the results and claimed voter fraud, leading to legal challenges and protests.
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