The two leading producers of coffee in the world are

Brazil and Columbia
Brazil and Vietnam
Mexico and India
Ethiopia and Mexico

The correct answer is (a) Brazil and Colombia.

Brazil is the world’s largest producer of coffee, accounting for 30% of global production. Colombia is the second largest producer, accounting for 16% of global production. The two countries together produce more than half of the world’s coffee.

The other options are incorrect. Mexico is the world’s 10th largest producer of coffee, accounting for 2% of global production. India is the world’s 6th largest producer of coffee, accounting for 6% of global production. Ethiopia is the world’s 7th largest producer of coffee, accounting for 5% of global production.

Brazil is the world’s largest producer of coffee because it has the ideal climate and soil for growing coffee beans. The country’s coffee industry is also well-developed, with a strong infrastructure and a large number of skilled farmers.

Colombia is the world’s second largest producer of coffee because it also has the ideal climate and soil for growing coffee beans. The country’s coffee industry is also well-developed, with a strong infrastructure and a large number of skilled farmers.

Mexico, India, and Ethiopia are all important producers of coffee, but they do not produce as much coffee as Brazil and Colombia. These countries also have different climates and soils, which affect the quality of their coffee beans.