Speaker 1: stunt performers are the unsung heroes of movies, but few
of them can afford health insurance.
speaker 2: we need to create tougher laws to protect same-sex
couples from discrimination.
speaker 3: new zoning laws are making it difficult for building
contractors to make a living.
speaker 4: the warning labels on medications are too hard to read,
even for people with good vision.
which speaker most likely represents a public interest group?