Which of the following items illustrates a tradeoff present in the U. S. Constitution? a)
Environmentalists disagree with industry on the benefits and dangers of
fracking.
b)
Pro-life protestors and abortion clinics disagree on the legality of buffer
zones dictating where protestors can stand.
Interest groups for the elderly and the Republican Party disagree on the
proper level of social spending for the elderly.
d) Unions and businesses disagree over the minimum wage.

A trade-off present in the US Constitution is illustrated by the following:

b)  Pro-life protesters and abortion clinics disagree on the legality of buffer

zones dictating where protestors can stand.

Explanation:

Certainly, pro-life protesters have the right to organize and stage protests as guaranteed by the Constitution, according to the First Amendment.  At the same time, there is need to set a boundary or buffer zone for protests.  These actions involve a trade-off or a balancing act between freedom of expression as guaranteed by the Constitution and the necessary restrictions imposed by private property rights.

hello most volcanoes are located at either divergent or convergent plate

this is where the plate motions aswell form magma