Answer: the correct option is B (Preoperational)
Explanation:
The theory of Cognitive development was proposed by Jean Piaget that humans progress through four developmental stages which includes the sensorimotor, preoperational, concrete operational and formal operational period.
During the pre-operational stage of cognitive development, Piaget noted that children do not yet understand concrete logic and cannot mentally manipulate information. That's why the child stated that the bottom row have more pennies instead of observing it remained the same
Discipline and a good attitude.
Gonorrhea. The other three options are viral.
Answer: Read Explanation
Explanation:
The "gas filled balloon" moves up, then the "upward force is larger" than the "force of gravity". The gas filled balloon causes the weight of the balloon to be heavier and hence, the force of gravity which acts on the balloon is also more than normal weight.
But in order to cause the upward motion of the balloon the upward force must overcome that weight so as to lift, therefore will be larger than the force of gravity.
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