A(n) a short review of what you have just presented, makes a good transition between major ideas. a. specific behavioral objective b. internal summary c. central idea d. general purpose

b. internal summary

Explanation:

The act of summarizing consists of making a brief revision of the text, highlighting the main points and the central idea. The internal summary is defined as the action of summarizing something by synthesis or summary, and is considered an essential element for any type of speech. The summary seeks to reach a subject so that the speaker understands its communicative purpose. In addition, the summary can improve knowledge and also improve an individual's language competence.

pretty sure a is right

b) to encourage free trade