Question

according to jean piaget, in what stage do children begin to use abstract thinking processes?
○ concrete operational
○ formal operational
○ preoperational
○ sensorimotor

question 8
1 pts
a(an) ______ begins as a one - cell structure that is created when a sperm and egg merge.
○ embryo
○ placenta
○ fetus
○ zygote

Explanation:

First Question (Piaget's Stage)

Jean Piaget's cognitive development stages: sensorimotor (birth - 2, motor/sensory), preoperational (2 - 7, symbolic play), concrete operational (7 - 11, concrete logic), formal operational (11+, abstract thinking). So the stage with abstract thinking is formal operational.

When a sperm and egg (ovum) fuse, the resulting one - cell structure is a zygote. An embryo develops from the zygote after cell division, the placenta is a fetal - maternal organ, and a fetus is a later stage of prenatal development.

Answer:

B. formal operational (assuming the options are labeled A - D as: A. concrete operational, B. formal operational, C. preoperational, D. sensorimotor)

Question 8 (Fertilization Structure)