Twelve-year-old cedrick's english teacher often chooses spelling words that can be rearranged to make new words. cedrick enjoys the challenge of anagrams and puzzles, and because he has always enjoyed science fiction comic books, he has recently begun making up his own stories. cedrick is in piaget's stage.
a) sensorimotor
b) preoperational
c) concrete operational
d) formal operational

Cedrick is in Piaget's D.) FORMAL OPERATIONAL stage.

Piaget's Stages of Cognitive Development
1) Sensorimotor - From birth to age 2.
2) Preoperational - ages 2 to 7
3) Concrete Operational - ages 7 to 11
4) Formal Operational - ages 12 and up

Formal Operational Stage of Cognitive Development has these characteristics and changes:
* young adult begins to think abstractly and reason about hypothetical problems
* abstract thoughts emerges and issues involving moral, philosophical, ethical, social, and political concerns are considered and discussed
* young adult begins to use deductive reasoning from a general principle to a specific data.

Iwould suggest the myers-briggs type indicator because the railroad unions are looking for which are focused introverts. the mbti was designed to provide a lot of information about what a person likes and what their personality based on the four-dimension scale. also for an employer it has been extremely to predict how an employee would act in a professional setting. this is what the railroad unions are looking for. they want the railroad workers to be focused and skillful to ensure the safety of everyone around them. but the other assessments don't match the criteria for the unions. like the measure disorder, emotions and self-esteem while the rorschach and tat tests are both projective tests that mainly measure someone’s personality. also, because this job is not easy, it is vital to make sure the employers are hiring the right people for the job.