Which of the following words does not share its ancestry with rectify—direct, regimen, obstruct, correct, or resurrection? Like rectify, four of these words ultimately come from Latin regere, which can mean "to lead straight," "to direct," or "to rule." Correct and direct come from regere via Latin corrigere and dirigere, respectively. Resurrection comes from Latin resurgere, whose stem surgere, meaning "to rise," is a combination of sub- and regere. Regimen is from Latin regimen ("position of authority," "direction," "set of rules"), itself from regere. And rectify is from regere by way of Latin rectus ("right"). Obstruct is the only one of the set that has no relation to rectify. It traces back to Latin struere, meaning "to build" or "to heap up."