(1) Workers Are Often Exposed to Contamination in the Workplace

Multiple Choice

(1) Workers are often exposed to contamination in the workplace and are not warned of the dangers of this exposure.(2) For instance, asbestos workers were not told for many years of the dangers of contracting asbestosis.(3) And farm workers are often misled about the dangers of insecticides and fertilizers.(4) Tougher legisla tion should be enacted in order to insure the safety of all workers."
Which sentence is the conclusion?

A) sentence (1)
B) sentence (2)
C) sentence (3)
D) sentence (4)