Is defined as the degree to which content is tailored to individual students.

a. interactivity
b. personalization
c. engagement
d. cohesion

B) Personalization

Explanation:

Personalization is defined as the technique in which every individual is considered and their requirement and desires are met accordingly.In terms of student learning, content is usually customized so that it can approach every student individually and create a better understanding environment for everyone.

Other options are incorrect because involvement ,cohesion and interactivity are not related with every single individual to meet their requirement in terms of content.Thus, the correct option is option(B).

the act of deciding on matters of the economy. economic decision making is routinely conducted by finance ministers, economic advisors, heads of major central banks and business leaders and can have profound effects on a major economy.

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.