Maria belongs to third generation adults.
Step-by-step explanation:
Immigrant is a person who leaves their country and stay in the foreign country as a permanent resident. Immigrants are classified into four categories. They are as follows:
i) Citizens
ii) Residents
iii) Non-immigrants
iv) Undocumented
In the above scenario, Maria lives in United States of America and does her MBA and earns highest income in her family. Her grandparents migrated from Mexico and settled in USA. Her parents were born and brought up in USA. Maria does not follow any traditional values of her grandparents. She is the third generation adult.