Please help with this question 20 points!! "Certain social classes changed in the transition from the Roman Republic to the Roman Empire."

Which of these supports this statement? (4 points)

Select one:
a. Marcus Aurelius promoted army officers based on merit, rather than their social standing.
b. Hadrian put an end to Rome's territorial expansion.
c. Trajan led an extensive public building program in Rome.
d. Diocletian established a tetrarchy to deal with "the Crisis of the Third Century."

The largest city in brazil, sao paulo, has a population of about 11 million. based on the rank-size rule, what is the population of the second-largest city, rio de janeiro, most likely to be? a. 8 – 10 million b. 5 – 6 million c. about 3 million d. about 1 million

When there are advances in technology, such as the personal computer, how might business productivity change? a) productivity is separate from technological advances so there is no impact. the new technology can replace outdated, less efficient, machinery. o) the businesses' products will no longer be demanded. d) manufactured items will be made elsewhere.

The world trade organization (wto), which was formed in 1995, trades without discrimination. which of these best describes what this principle means? all its member countries charge the same prices for basic commodities such as wheat and lumber. b) all its member countries do not trade with countries which had discriminatory racial policies. c) all its member countries trade only with countries that sign the wto agreement. d) all its member countries open their markets equally to all member nations. answer is d