## **Core Concept**
The question presents a case of a one-year-old child with bilateral hearing difficulty and a type B tympanogram, indicating a conductive hearing loss without signs of infection. This scenario suggests a middle ear problem that is not due to an infectious process.

## **Why the Correct Answer is Right**
The presence of a type B tympanogram, which shows a flat tracing, is indicative of middle ear fluid or a problem with the tympanic membrane's mobility. Given that there's no sign of infection, the most likely cause in a child of this age could be otitis media with effusion (OME) or a middle ear anomaly. Tympanostomy tube insertion (tympanostomy) is a common and effective treatment for persistent middle ear effusion that causes significant hearing loss, especially in children, as it helps to aerate the middle ear and restore hearing.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is blank and cannot be evaluated.
- **Option B:** This option is blank and cannot be evaluated.
- **Option D:** This option is blank and cannot be evaluated.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that type B tympanograms are often associated with middle ear fluid, which can cause conductive hearing loss. In children, especially those as young as one year old, establishing a diagnosis and considering tympanostomy tube insertion early can be crucial to prevent long-term hearing and speech development issues.

## **Correct Answer Line**
**Correct Answer: C.**