What element of Chip and Dan Heath’s SUCCESs principles prompts writers to identify the essential core of their ideas?

Advocates should ______ when citing the sources of their outside support.

a. employ paraphrase b. follow guidelines that characterize good written communication c. cite secondary publications as if they were primary sources d. be explicit

Advertising in the United States was a small business until the mid-1800s, when industrialization and ________ combined to alter the social and cultural landscape, bringing about advertising's expansion.

A. the Civil War B. the introduction of radio C. the Spanish-American War D. the freeing of the slaves