Final answer:
At level 5, a barbarian in D&D gains the abilities Extra Attack and Fast Movement, enabling them to make multiple attacks and increase their movement speed respectively.
Step-by-step explanation:
In the fantasy role-playing game Dungeons and Dragons (D&D), a barbarian at level 5 gains the following abilities:
- Extra Attack: This allows a barbarian to make two attacks instead of one whenever they take the Attack action on their turn.
- Fast Movement: A barbarian's speed increases by 10 feet while they are not wearing heavy armor.
Option A, which pertains to Ability Score Improvements, is also gained at level 4 of the barbarian class, allowing the character to increase ability scores or take a feat, depending on the rules of the particular D&D game edition in use. Option B, Additional Hit Points, is gained every level as the barbarian's hit die is rolled for more hit points. Option D, Spellcasting Abilities, is not typically associated with the barbarian class in D&D.