What was the main reason that the mexican government created telesecundaria

In 1968, Telesecundaria was launched in Mexico with the aim to extend lower secondary learning using television support to remote and small communities with the lower cost inferior to other conventional secondary schools.

If your doing a test/quiz and say something like this...
A. to provide inexpensive,enjoyable television shows.
B. to provide education in rural areas.
C. to teach people how to grow successful gardens.
D. to encourage young adults to choose the teaching profession. your doing a test/quiz right now and say something like "

The answer is B