"Bulging of an amber tympanic membrane without mobility is most often associated with:

a. impacted cerumen in the canal.

b. healed tympanic membrane perforation.

c. repeated and prolonged crying cycles.

d. middle ear effusion."

D. middle ear effusion.

Explanation:

The tympanic membrane is a thin membrane present in the ear which transmits sound waves to the inner ear by vibrating itself like drum therefore also called the eardrum.

Sometimes a medical condition happens in which the tympanic membrane appears to be bulged or swelled. This eardrum swells due to the accumulation of the amber colored fluid which gets collected in the middle ear, which causes no pain, no redness and is immobile. This condition is known as the middle ear effusion.

Thus, Option-D is correct.

The Hepatitis B virus

Explanation:

The Hepatitis B virus is known as a bloodborne virus, because it is transmitted from one person to another via blood or fluids contaminated with blood. The virus attacks the liver/organ. It can cause scarring of the liver, liver cancer, liver failure, and death.