A researcher is seeking a representative sample (of size n=50) of Fortune magazine's list of the ...

A researcher is seeking a representative sample (of size n=50) of Fortune magazine's list of the 500 largest
  industrial corporations. She randomly decides to begin at company number 4 and then select every 10th company
  until 50 have been selected. The researcher is using what type of sampling plan?
 a. Simple random sampling
  b. Judgment sampling
  c. Systematic sampling
  d. Stratified sampling
  e. Convenience sampling

Question 2

At 5 percent of the U.S. population, ____ are the third largest minority group in the United States.
 a. Hispanic Americans
  b. African Americans
  c. Americans of European descent
  d. Asian Americans
  e. Native Americans