Write the number оf the mаin ideа оf this pаragraph in the space prоvided. (1)Over the ages, many cultures have considered it better to be right-handed than left-handed. (2)And it is true that being left-handed has disadvantages, such as being more prone to allergies. (3)However, left-handedness does have advantages. (4)Benjamin Franklin, Leonardo da Vinci, and Pablo Picasso were all left-handed. (5)All these men (males are more likely than females to favor the left hand) had a highly developed ability to visualize space. (6)That ability is a quality that may be stronger in left-handed people. (7)This fact may explain the high proportion of left-handed architects. (8)Also, left-handed people may actually be more likely to have special intellectual gifts. (9)A study of over 100,000 twelve- and thirteen-year-olds found nearly 300 who scored very high on the Scholastic Aptitude Test (SAT). (10)Twenty percent of this top-scoring group were left-handed, twice the rate of left-handedness in the general population. The main idea is in Sentence [a].