Answer:
Nasa pic yung sagot
Explanation:
<em>P</em><em>a </em><em>brainlest </em><em>please </em>
1/3 chance. You have 15 marbles 5 which are black. That makes it 5/15 which reduced would be 1/3
The variable is the group that was given caffine, because thats what the doctors manipulated. They possibly altered the natural memory of the participants by giving them caffine. A more specific variable could be how much caffine each participant is given and what time are they given it.
Answer:
sorry i was late but for anyone else who wants to know the answer is
D. Vygotsky's theory of cognitive development
Explanation: