Eine Partei möchte in den Deutschen Bundestag. Sie muss aber einen Mindestanteil an Wählerstimmen haben. Das heißt …

Why this is the correct answer

To enter the Bundestag, a party must clear the five-percent threshold (Fünf-Prozent-Hürde) of the national vote, or alternatively win at least three direct constituency seats. This rule prevents very small splinter parties from fragmenting parliament into an ungovernable number of groups. Germany introduced the threshold after the Weimar Republic's extreme fragmentation contributed to the collapse of democracy.