Final answer:
The case that guarantees the Second Amendment's right to bear arms in all U.S. jurisdictions is District of Columbia v. Heller.
Step-by-step explanation:
The correct result of the case that guarantees the Second Amendment's right to bear arms in all jurisdictions in the U.S. is option a. District of Columbia v. Heller. In this landmark case in 2008, the Supreme Court held that the Second Amendment protects an individual's right to possess firearms for self-defense within their homes.
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