Are Traffic Separation Scheme compulsory?

The covers all of earth like a thin shell, but it is not a solid sheet of material. it is broken up into several large sections and many smaller ones. fill in the blank.

The availability and cost of blank is a major component of a region's overall cost of living. marking brainliest answer btw only one answer -health care -transportation -housing -education its 20 pts

Select the sentence from the section "father inspired her belief in education" that is most relevant to the central idea of the article.