3. Most people in Mexico and Central America choose to emigrate in order to
move somewhere warmer.
trade their goods.
find better jobs.
escape religious persecution

The right choice is:

Find better jobs.

Explanation:

Millions of Mexicans and Central Americans decide to go to the United States for two reasons mainly. The first reason is to look  for economic opportunities they don´t  have at home; they want  jobs that are better paid  and to escape poverty.

The second reason is equally important. Many people flee their countries because their personal safety is threatened by criminals gangs known as "maras" , from the threats of drug traffickers; for them, to stay home may mean death. This is particularly true in Guatemala, Honduras and El Salvador, though many Nicaraguans now flee their country to escape repression by the dictatorship of Daniel Ortega, an old leftist comandante who opposed the USA in the 1980s , but he came back to power in 2007.

sir thomas more, venerated in the catholic church as saint thomas more, was an english lawyer, social philosopher, author, statesman, and noted renaissance humanist. he was also a councillor to henry viii, and lord high chancellor of england from october 1529 to 16 may 1532.

d. the right to establish a one-house legislature