Why might a child thinking at the concrete operational level have ...

[charchew]

Why might a child thinking at the concrete operational level have difficulty with X + Y = 7?
 
  a. S/he cannot think of two dimensions at the same time.
  b. S/he cannot think abstractly.
  c. S/he cannot think logically.
  d. S/he cannot use conservation.

Question 2

When given a ___________________ _, 3-month-olds remembered how to move the mobile after a 28-day delay.
 
  Fill in the blank(s) with correct word

[bblaney]

Answer to Question 1

B

Answer to Question 2

reminder/priming