After the astronaut applies the force to the keyboard, the astronaut moves
A. faster and upward.
O
B. at a uniform speed and downward.
C. at a uniform speed away from the keyboard.
D. faster and toward the keyboard at a constant rate.
00

object 2 because all the other ones are wrong

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.