The gulf of tonkin resolution: a. was a nonbinding measure that passed both the house and senate, calling for peace negotiations between north and south vietnam. b. authorized the president to take "all necessary measures to repel armed attack" in vietnam. c. outlined an attack and exit strategy in south vietnam. d. authorized a ground invasion of u. s. troops into north vietnam. e. was opposed by the majority of lawmakers in congress.

The correct answer is letter "B": Authorized the president to take "all necessary measures to repel armed attack" in Vietnam.  

Explanation:

The Gulf of Tonkin Resolution (1964) granted President of The United States Lyndon B. Johnson to “take all necessary measures to repel any armed attack against the forces of the United States and to prevent further aggression” by communist North Vietnam. By the beginning of August 1964, two U.S. destroyers (U.S.S. Maddox and U.S.S. Turner Joy) stationed in the Gulf of Tonkin were attacked by North Vietnamese forces. It provoked the U.S. Congress to raise American military presence in that Asian area thanks to the Gulf of Tonkin Resolution. It was the official document that approved the full involvement of the U.S. in the Vietnam War.

the answer is b: a lockout

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