Mexican immigrants are largely driven to the US by a desire for better economic opportunities, despite significant challenges, including working in low-paid labor roles. Their presence is indicative of the economic disparity between the two nations rather than an inherent inclination to break laws. ;
The main reason for the influx of Mexican immigrants into the U.S. in the last two decades is to seek better economic opportunities. Additionally, rice harvesting is an economic activity predominantly found in Eastern Asia rather than in Mexico. The chosen options are D for the first question and A for the second question.
;