A party wants to enter the German Bundestag. However, it must achieve a minimum share of the vote. This is known as the...

1. 5% threshold. ✓
2. admission limit.
3. base value.
4. directive.

The 5% threshold prevents too many small parties from entering parliament, which helps the government remain stable and efficient. It's like a rule to ensure parties have a significant level of support before they can help make laws!