The drawing technique of using dots instead of lines called stippling. Using lines instead of dots on the other hand is called hatching. Stippling involves placing individual dots across a surface in a pattern that will be identifiable. Individual dots are used to imply the shape, texture, or shadowing of a subject.
Answer: One author claims that dogs bred to be tiny may have weak nerves
Explanation: The research word "claim" in this sentence is used correctly, and not to mention the fact that it is more likely for this word to come from a reliable source, such as a person that has written a book at least <em>once </em>in his or her life. (I've done this quiz).