A nurse is planning to teach a client who has asthma, a chronic inflammatory disorder of the airways that causes bronchoconstriction, mucus production, and coughing. Which of the following statements by the nurse is appropriate for explaining the pathogenesis of asthma to the client?

Choice A reason: This is a correct answer because obtaining a blood culture from the client before administering the antibiotic can help identify the causative microorganism and its sensitivity to different antibiotics, which can guide the selection of the most appropriate antibiotic therapy.

Choice B reason: This is an incorrect answer because checking the client's vital signs and oxygen saturation is an ongoing intervention that should be performed throughout the course of treatment, but not necessarily before administering the antibiotic.

Choice C reason: This is an incorrect answer because assessing the client's level of consciousness and orientation is an ongoing intervention that should be performed throughout the course of treatment, but not necessarily before administering the antibiotic.

Choice D reason: This is an incorrect answer because flushing the client's intravenous line with normal saline is an intervention that should be performed after administering the antibiotic, not before, to ensure that no residual antibiotic remains in the line.

Choice A reason: This is a correct answer because family history of diabetes is a genetic risk factor that can increase the likelihood of inheriting defects in insulin production or action.

Choice B reason: This is a correct answer because obesity is a modifiable risk factor that can cause insulin resistance, a condition in which cells do not respond properly to insulin and glucose accumulates in the blood.

Choice C reason: This is an incorrect answer because smoking is not a risk factor for developing diabetes mellitus, although it can worsen its complications such as cardiovascular disease and kidney disease.

Choice D reason: This is an incorrect answer because hypertension is not a risk factor for developing diabetes mellitus, although it can be associated with it and increase the risk of cardiovascular complications.

Choice E reason: This is a correct answer because physical inactivity is a modifiable risk factor that can reduce insulin sensitivity and glucose utilization by muscles, leading to hyperglycemia.