Read the paragraph.The American Cancer Society sponsors research studies pertaining to preventing and treating cancer. In one long-term study, known as CPS-3, researchers took blood samples and health histories from over 300,000 volunteers. Researchers are following the volunteers for 40 years.
Answer
A
They help researchers raise money for new research programs.
B
They help researchers understand factors that prevent cancer.
C
They help researchers advocate for new cancer treatments.
D
They help researchers teach the public how to live longer.