After how many days following exposure does mumps typically appear?

Mumps typically has an incubation period of about 12 to 25 days after exposure to the virus. This time frame is when the virus invades the body and begins to replicate before symptoms such as fever, headache, and swelling of the salivary glands become apparent. Recognizing this incubation period is crucial in understanding the spread of the disease and in making informed decisions regarding vaccination and public health measures. The other time frames provided do not accurately reflect the recognized incubation period for mumps, which is why option B is the correct choice.