Which of the following is true? a. People specialize by ...

[RODY.ELKHALIL]

Which of the following is true?
 a. People specialize by concentrating their energies on the activity to which they are best suited, because they incur lower opportunity costs as a result.
  b. One advantage of specialization is that workers acquire greater skill from repetition.
 c. If a person, a region, or a country can produce a good or service at a lower opportunity cost than others, we say that they have a comparative advantage in the production of that good or service.
  d. All of the above are true.

Question 2

Many scholars believe that the importance of research and development is understated. Efforts in research and development can include:
 a. the introduction of new products.
  b. management improvements.
 c. production innovations.
 d. any of the above.

[blazinlyss]

Answer to Question 1

d

Answer to Question 2

d