Answer to Question 1
D
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An example of adaptation for survival is the development of antibiotic-resistant bacterial strains of Staphylococcus aureus, Enterococcus faecalis, E. faecium, and Streptococcus pneumoniae. Bacterial resistance is not demonstrated by aerobic activity. Spore production is another form of adaptation. Means of transmission is a component of the chain of infection, not an example of bacterial resistance.
Answer to Question 2
A
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A gastric or intestinal tube is used for a variety of reasons, including controlling gastric bleeding, a process called compression or tamponade. An endoscope is used for examining peptic ulcers. Gastric residual and gastric reflux are caused by gastrointestinal intubation, so it would be incorrect to say that gastrointestinal intubation measures gastric residual or reduces the risk of reflux.