California Firearm Safety Certificate (FSC) Practice Exam 2025 - Free Firearm Safety Certificate Practice Questions and Study Guide.

The minimum age requirement to obtain a Firearm Safety Certificate in California is 18 years old. This is the age at which an individual is legally considered an adult and is eligible to purchase and possess a firearm. Options B, C, and D are incorrect because they are either lower or higher than the legal age of 18 years. This means that individuals under 18 are not eligible for the certificate and individuals over 18 do not have to wait until they are 21, 16, or 25 to obtain it.