Question

Did you know that just 10% of the population is left- handed? Scientists don't know why some people is lefties. Genetics seems to be responsible about 25% of the time. but even identical twins, who share the same genes can sometimes have differing dominant hands. People believe left-handiness can affect many things your performance in School, your skills at sports, and even how much money you make. There are plenty of theories about what determines which and you write with, but a growing number of experts believe it's random mixed handers people who use both hands equally appear to be more different from people who favor one hand over the other. In comparison the differences between righties and lefties are minimal.

Which of the following statements restates the main idea of the passage?
A. Most scientists believe that handedness is genetic
B. Identical twins are more likely to have the same dominant hands
C. There is a lot of research about mixed-handness
D. Right or left-handedness doesn't really affect the outcomes of people lives.

Answer 1

The main idea is that handedness, particularly being left or right-handed, may not have a significant impact on various aspects of an individual's life.

Step-by-step explanation:

The passage primarily deals with the topic of handedness—whether an individual is right-handed or left-handed—a trait that is part of cognitive development and brain lateralization.

Although genetics play a role in determining handedness, the exact reason why some people are left-handed is not fully understood, as evidenced by studies of identical twins with different dominant hands.

Moreover, mixed handers, or people who use both hands equally, are mentioned as differing more significantly from those with a single dominant hand than righties differ from lefties.

The main idea of the passage suggests that handedness may not significantly affect various aspects of an individual's life, which aligns with statement D: Right or left-handedness doesn't really affect the outcomes of people's lives.