A reader can usually recognize a sentence fragment because the reader is

A. left asking questions.

B. confused by too many words.

C. not sure where details apply.

D. puzzled where to stop reading.

It is easy for a reader to ascertain where there may be a sentence fragment. A reader will have questions about what happened or who acted in the sentence after reading a fragment. For example, read the fragment, "went to the store." The reader would be left wondering exactly WHO went to the store.