Question

during the late-1960s, declining united states’ public support for the vietnam war was linked to—

the soviet decision to give new technology to south vietnamese industrialists.

the vietcong’s deployment and use of modern helicopter gun-ships in saigon.

the successful apollo landing of men on the moon in the summer of 1969.

the graphic new coverage of the war provided by television networks.

Explanation:

In the late 1960s, uncensored, graphic television footage of the Vietnam War brought the harsh realities of combat directly into American homes. This constant, vivid coverage contradicted official government narratives about the war's progress, leading to widespread disillusionment and a sharp decline in public support for the conflict. The other options are unrelated to the drop in U.S. public backing for the war.

Answer:

the graphic new coverage of the war provided by television networks.