Correct Option: D

confused (Adjective) : unable to think clearly or to understand
intelligible (Adjective) : that can be easily understood; understandable
dull (Adjective) : not interesting or exciting; not bright or shiny
foolish (Adjective) : unwise; wily; silly
garbled (Adjective) : told in a way that confuses the person listening, usually by somebody who is shocked or in a hurry; confused