**Core Concept**
Mumps is a highly contagious viral infection caused by the mumps virus, primarily affecting the salivary glands near the ears, leading to swelling and pain. The incubation period is the time elapsed between exposure to the virus and the onset of symptoms.

**Why the Correct Answer is Right**
The incubation period of mumps typically ranges from 12 to 24 days, with an average of 16-18 days. This prolonged incubation period allows for the virus to replicate and spread within the community before symptoms appear, making it challenging to control outbreaks. The exact duration can vary depending on factors such as the individual's immune status and the dose of the virus.

**Why Each Wrong Option is Incorrect**
**Option A:** 4-5 days is the incubation period for Measles, not Mumps. This option is incorrect as Mumps has a longer incubation period.
**Option B:** 7-15 days is too short for the incubation period of Mumps, which typically ranges from 12 to 24 days.
**Option D:** 50 days is excessively long and not a valid incubation period for Mumps.

**Clinical Pearl / High-Yield Fact**
The incubation period of Mumps can be longer than other common viral infections, making it essential to maintain high vaccination rates and implement control measures promptly in the event of an outbreak.

✓ Correct Answer: C. 12-24 days