Question

Many scientists have studied left-handedness. The majority of humans are right-handed. This means that most people use their right hand for everyday tasks. These tasks may include writing, throwing, or using scissors Scientists do not know what makes peoplie right- or left-handed. Some think it is a result of genetics. Others believe that social pressures determine handedness. Some scientists think that it is a combination of several factors Do it!

Scientists study what left-handedness ___________.

A) Damages.
B) Improves.
C) Causes.
D) Hides.

Answer 1

Scientists study what causes left-handedness, exploring its genetic origins, the role of brain lateralization, and its cognitive and motor effects, with the majority of humans being right-handed.

Step-by-step explanation:

Scientists study what left-handedness causes. The phenomenon of being left-handed or right-handed is known as handedness, or brain lateralization. The majority of humans, about 90%, are right-handed. This has been a topic of much interest and has led researchers like David Frayer to explore the ancient origins of this trait, with evidence like striations on fossil teeth showing right-handedness in early humans like Homo habilis. Researchers such as Lesley E. Tan have even studied handedness in relation to motor competence in preschool children. Gazzaniga and colleagues have explored how the lateralization of the brain correlates with various cognitive functions and behaviors, indicating the complexities of cerebral hemisphere interactions. However, the correct answer to the fill-in-the-blank question is C) Causes, as scientists are seeking to understand the underlying reasons for left-handedness.