The nurse is teaching a prenatal class on the functions of the various structures involved with pregnancy.

The nurse determines the class is successful when the class correctly chooses which function of amniotic fluid.

Staphylococcus aureus is the most common cause of acute osteomyelitis.
Osteomyelitis is an infection of the bone that can be caused by a variety of microorganisms, including bacteria, fungi, and mycobacteria.

Staphylococcus aureus is present in more than 50% of patients with osteomyelitis that results from contiguous spread from adjacent infected tissue or open wounds.
Choice B is not an answer because Pseudomonas aeruginosa is a less common cause of osteomyelitis and is more commonly seen in injection drug users.
Choice C is not an answer because Streptococcus B is not a common cause of osteomyelitis.
Choice D is not an answer because Escherichia coli is not a common cause of osteomyelitis.

Muscular dystrophies are disorders associated with progressive degeneration of muscles, resulting in relentless and increasing weakness.
This is a general description of muscular dystrophy, a group of genetic diseases that affect different types of muscles and cause various degrees of disability.
Children with muscular dystrophy may experience frequent falls, difficulty walking or running, muscle pain, learning difficulties, and breathing problems.
There is no cure for muscular dystrophy, but treatments can help manage symptoms and slow down the progression of the disease.
Choice B.
The extent of degeneration depends on performing daily physical therapy is incorrect, as physical therapy cannot prevent or reverse the degeneration of muscles caused by muscular dystrophy.
Physical therapy can help maintain muscle strength and flexibility, prevent contractures and deformities, and improve mobility and function.
Choice C.
The child will be able to function normally and require no special accommodations is incorrect, as muscular dystrophy affects the child’s ability to perform daily activities and may require assistive devices, such as braces, wheelchairs, or ventilators.
The child may also need special education services, occupational therapy, speech therapy, or psychological counseling to cope with the disease.
Choice D.
The weakness that the child is currently experiencing will probably not increase incorrectly, as muscular dystrophy is a progressive disease that causes muscle weakness to worsen over time.

The rate and severity of progression may vary depending on the type and subtype of muscular dystrophy.
Therefore, choice A is the best answer to this question.