I believe the correct answer is a. pushing a riding
toy with their feet.
Between ages 2 and 3 years, most children learn how
to push a riding toy with their feet. At this point of their development,
children can run and will probably fall less. They start to get better at
throwing overarm, kicking and catching a ball.
This is an example of a "cohort difference."
An cohort study refers to a specific type of longitudinal investigation that example an cohort (a gathering of individuals who share a characterizing trademark, regularly the individuals who encountered a typical occasion in a chose period, for example, birth or graduation), playing out a cross-segment at intervals through time. Hope it helps!
43,000 marchers, including 17,000 WWI veterans, their families and supporters marched on Washington in 1932. They were known as the Bonus Army
Explanation:
The Ebers Papyrus, c. 1500 BCE, details the use of lint, animal grease, and honey as topical treatments for wounds. The lint provided its natural absorbency, the animal grease provided a barrier to environmental pathogens, and the honey served as an antibiotic agent.
