Answer:
D) Becoming a dominant party
Explanation:
No third party has won any presidential election, but some
A) Support a specific issue (green party = environment)
B) Forming as protest groups (tea party protests of government spending)
C) Impacting election results - some votes that could've gone to one candidate or another went to a third party, and the amount of third party votes could have swung a given election the other way if they had all voted for one candidate or the other
