For example: whose responsibility is it to ensure safety belts are suitable for the age group of child? (educationbusinessuk.net)
Not all toys are appropriate for all ages of children and some of these toys can even harm the development of children when used with children outside of the recommended age bracket. (thebestbabyjumper.com)
As the child grows, they are able to acquire cognitive skills appropriate for their age group. (newkidscenter.com)