This means that different drugs would have different dosing regimens, subject to change. Based on this sentence, the reader can conclude that -
A. Doctors prefer to treat all infections in the same way to be safe
O B. Doctors need to find new ways to communicate with patients about drug use and infections to ensure that patients follow prescribed treatment plans
O C. Certain infections may require different courses of antibiotic treatment that may be altered over time.
O D. Very common infections have triggered resistance bacteria that cannot be treated effectively with any antibiotic regimen.

Read the passage. the dust bowl during the 1930s, extreme drought and high winds made life incredibly difficult in the great plains region of the united states. in many areas, rainfall was forty percent less than normal. the soil became extremely dry, and when strong winds blew, they created tremendous dust storms. these so-called “black blizzards” were so thick that they made daylight seem like dusk. during this terrible period, the great plains region of the united states was named the “dust bowl.” over the next few years, the drought continued, and the winds created more dust storms. in some places, the drought and high winds lasted for eight years. many people wondered if the black blizzards would ever end. which statement about this paragraph’s main idea is true? this paragraph’s main idea is stated in the topic sentence. there are not enough details to support the main idea. this paragraph’s main idea is implied. this paragraph does not express a main idea.