Answer:
End slavery.
Step-by-step explanation:
Mier y Teran was a commander in Mexican War of Independence. When Mexican government sent him to look and investigate the situation in Texas, he outlined several recommendations to the Commission. In his report he strongly recommended that measures should be taken to avoid the US's interference in Texas. To do so, he suggested that more militray bases should be established near settlements, closer trade ties between Texas and Mexico, and encourage more Mexican and European settlers.
Therefore, the recommendation that Teran didn't suggested was to abolish slavery. Though, when the report was sent to Mexican Government, the Law of April 6, 1830 was established which included prohibition of slavery as well.
Therefore, the correct answer is option B.