During the Selma marches, Alabama state troopers used tear gas to try and stop protesters from

  The state troopers wanted to prevent the protesters from reaching to the Governor of Alabama, George Wallace with their cause.

Explanation: The blacks who got brought into America for indentured labor had to work as slaves to their white masters. Found that they got discriminated in every sphere with no rights and racism rampant.

They took to the streets to protest and fight for their rights. They wanted the black voters to be registered and get the right to vote. Initially, the demonstrations were peaceful, but they were arrested, which became the bone of contention.

It was when the troopers fatally shot a young black. It was the tipping point. The civil rights leaders decided the governor in the state capital of Montgomery.

The state troopers were in no mood to back out with firmer affirmation of doing anything to stop the march. At the bridge, the troopers were ready to confront the protesters with tear gas shells.

There was no negotiation, and the charge by the troopers began, and the tear gas clouds permeated the air with terrifying protestors wailing and screaming and forced them to go back.

the answer is b.

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