Mexico's economy is based largely on a.) oil exports b.) mining c.) agricultural and live stock

Mexico's economy is based largely on C. agriculture and live stock. There isn't much oil in Mexico, or else it would be a much richer country than it currently is. Mining is also not that popular in Mexico, which leaves us with agriculture and live stock. You may know that there are a lot of lamas and other cattle that Mexicans breed and sell, which makes up for the most of their economy, besides agriculture and crops.

Internal combustion engines