When should a writer establish common ground before the bottom-line statement? a. when the details are arranged in order of importance b. when the reader may disagree with the bottom-line statement c. when the document is minutes of a meeting d. when the report does not have an executive summary

The best answer is "B"

When the reader may disagree with the bottom-line statement

Explanation:

A Common ground is a point whereby opinions and interest is agreed upon by each party especially when they don't agree on a thing easily.

A bottom-line statement is more of a closing statement after which an agreement have been made. It is more like the conclusion of the whole statement.

Therefore the writer should establish a common ground before the bottom line statement when the reader may disagree with the bottom-line statement.