a) Safety legislation has been passed to regulate chemical substances and drugs and poisons, but not toys, automobiles, and fabrics.
b) Companies can safely ignore patent laws.
c) Manufacturers are generally not concerned with product liability.
d) The government may prevent companies from adding products through acquisitions if the effect threatens to decrease competition.

The answer here is d) The government may prevent companies from adding products through acquisitions if the effect threatens to decrease competition.