Read the following passage and mark the letter A, B, c, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.
Left-handers are the odd ones out. Sure, lefties (23) ___________ up about 10 percent of the
population - but, frankly, it seems like society has forgotten about them. Just consider all of the right-handed gadgets, awkwardly designed desks, and cooking tools that fit comfortably only in
your right hand. What (24) ________ someone to become a lefthand? Scientists aren't exactly sure, but
research points to a complex (25) ______ between genes and environment. While no exact set of
"leftie genes" have been discovered, people who dominantly use their left hands do have more left-handed family members. And researchers have found different brain wirings in righties vs.
lefties. But no matter (26) ______ it is that drives someone to use their antipodal paw, science has
also uncovered a particular set of personality traits that left-handed people tend to have. So for all of you lefties, leftie-loving righties, and ambidextrous folks out there - it’s time to brush up on your left-handed knowledge and help (27) ________ an end to leftie discrimination once and for all.
Question 24