Which is the main region of mexico and covers much of the central part of the nation?
a. mexican plateau
b. gulf coastal
c. baja california

The correct answer is A. The main region of Mexico, that covers much of the central part of the nation, is the Mexican Plateau.

Explanation:

The Mexican Plateau is a large plateau in the middle and north of Mexico. The plateau occupies about a third of Mexican territory, but is home to three-quarters of the population. The Mexican Plateau, which has an average height of 1,800 meters above sea level, extends over the states of Chihuahua, Coahuila, Nuevo Leon, Durango, Zacatecas, San Luis Potosi, Aguascalientes, Guanajuato, Queretaro, Hidalgo, Mexico, Tlaxcala, Puebla, Jalisco, Michoacan, Veracruz and the Federal District.

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !