Which speaks most likely represents a public interest group?

Among the options given on the questions the correct answer is speaker 4.

Speaker 4 is most likely represents a public interest group.

Explanation: There are different aspects of the four different speakers.

The speaker 1 is talking about the rights of the stunt actors who are not getting proper medical support.So the speaker 1 is talking about a individual interest group.

The speaker 2 is talking about the same sex law for the privilege of the gay people. So it is also an individual interest group.

The speaker 3 talks about the profit of the building makers. Therefore the aspect f speaker 3 is also not a public interest.

The speaker talks about the size of the letter written on the warning of the medication. The size of the letter is not large enough to see,even for the people with good eyesight let alone the old people.Therefore it is an interest of public.

So the speaker 4 represents the public interest group.