Final answer:
Gabriel Garcia Marquez mainly writes in a style called Magical Realism. Correct option is A.
Step-by-step explanation:
The style of writing popular in Latin and South America that Gabriel Garcia Marquez mainly writes in can be called Magical Realism. Magical realism is a literary genre in which fantastical elements are described in realistic detail. Gabriel Garcia Marquez, along with other Latin American writers like Jorge Luis Borges and Isabel Allende, popularized this style of writing.