Answer to Question 1
B
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Five types of oral antidiabetic agents exist, all of which may be used to treat type 2 diabetes when diet and exercise alone fail to control the disorder. The drugs lower blood sugar by different mechanisms and may be used in various combinations for additive effects.
Answer to Question 2
D
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Magnesium citrate is a rapid-acting, aggressive laxative that causes fecal matter to increase in bulk. It increases the motility of the gastrointestinal (GI) tract by increasing the fluid in the intestinal contents, which enlarges bulk, stimulates local stretch receptors, and activates local activity. It does not block absorption of fats, stimulate the nerve plexus, or form a slippery coat.