Economists commonly refer to a person's accumulated knowledge and skills as Select one: O a. the knowledge productivity base. O b. relevant accumulated productivity. O c. robotic capital. O d. internal capital. O e. human capital.Which of the following is the best example of a disembodied technological change? Select one: O a. Learning by doing O b. A local bagel bakery deciding to use the Thompson bagel machine O c. A mortgage company using a new computer program to determine whether an applicant qualifies for a loan O d. A firm that replaces labor with capital O e. A company that replaces workers with robotsThe productivity curve shifts upward as a result of Select one: O a. more technology. O b. a higher population. O c. more capital. O d. less capital. O e. less technology