Which of the following explains why national security was an issue in the annexation between Texas and the U.S.?(1 point)

Responses

Mexico did not agree to the validity of the Treaty of Velasco after the Texas Revolution.
Mexico did not agree to the validity of the Treaty of Velasco after the Texas Revolution.

Mexico agreed that the border of Texas was the Rio Grande, as the Treaty of Velasco stated.
Mexico agreed that the border of Texas was the Rio Grande, as the Treaty of Velasco stated.

Mexico thought that Santa Anna signed the Treaty of Velasco of his own free will.
Mexico thought that Santa Anna signed the Treaty of Velasco of his own free will.

Rangers moved to Texas to protect against an uprising if Mexico tried to rebel.

The correct response is: Rangers moved to Texas to protect against an uprising if Mexico tried to rebel.