Preliminary information suggests that the effect of (face-to-face) counseling is larger for migraine sufferers who are women than men. Knowing this, the scientist would probably use a: A) completely randomized design. B) block design, with counseling and no counseling as the blocks. C) block design, with women and men as the blocks. D) stratified random sample.

C) Block design, with women and men as the blocks.

Explanation:

By doing this block design, dividing the men's group and women's group, it would help identify if the preliminary information was accurate.

Block desing's objetive is to manage a source of variability that is not of prior intrest to the research.

answer; ///he could not explain why the continents drifted;

answer; block grants;