How soon can the effects of marijuana be felt after consumption?

Answer: C — Within 5 and 15 minutes of smoking or eating

Marijuana can produce effects within 5 to 15 minutes of smoking or eating it. This is because the active ingredient in marijuana, THC, is absorbed quickly into the bloodstream and travels directly to the brain, resulting in immediate effects. Option A is incorrect because 24 hours is too long for the effects to be felt. Option B is also incorrect because while the effects may feel instant, it takes a few minutes for the THC to be absorbed and reach the brain. Option D is incorrect because it would be unusual for the effects of marijuana to take several days to be felt.