"In 1979, Petroleum and Natural Gas Contributed 67 Percent of the Total

Multiple Choice

"In 1979, petroleum and natural gas contributed 67 percent of the total energy, while coal supplied only 30 percent. Electrical power increased from a negligible amount in 1900 to about 500 watts per person." The type of supporting material used in this example is __________.

A) definition
B) statistics
C) comparison
D) testimony