Question

the 1962 book silent spring documented
the early history of the civil rights movement.
the early history of the vietnam war.
the harmful effects of pesticides.
the harmful effects of the philadelphia plan.

Explanation:

Rachel Carson's 1962 Silent Spring exposed the ecological and human health harms of widespread pesticide use, sparking the modern environmental movement. The other options are unrelated to the book's core focus.

Answer:

the harmful effects of pesticides.