Read the passage from the supporting text "disease central" in when birds get flu by john diconsiglio.

the cdc started in 1946 in atlanta, georgia. at first, the organization focused mainly on the control of malaria—which meant killing mosquitoes. scientists at the center organized a huge effort to spray an insecticide called ddt on more than six million homes. and by 1949, malaria was no longer a serious health problem in the u. s.

the author most likely includes this passage to imply that

dr. dowell must be older and experienced, given the cdc’s age.
dr. dowell will be successful, given the cdc’s history of success.
dr. dowell will study malaria, given the cdc’s focus on malaria.
dr. dowell is not used to working abroad, given the cdc’s location in the us.