<span>The place where two bones meet and allow our skeletons to be more flexible is known as a Joint.</span>
C,the answer is C because enzymes are catalysts,they help speed up reactions.
The correct answer is b.
The child is reaching for a toy which is not visible to him (hidden under a cloth), therefore, the child has a mental representation of the object in his/her mind. This action means that the child acknowledges that the objects continue to exist even when he/she can not hear or see them. This thought process is called object permanence and it is an ability acquired between the 4th and 7th month of a child's development.
