<span>The correct answer is FALSE. Subordinate clause is dependent on a main clause. It can only create complete thought when used with a main clause, and not by itself.</span>
False ,
The punctuated sentence will be :
His doctor at any rate , could not identify the problem.
A speaker addresses a person for various reasons. For example, s/he may see that the listener is distracted and s/he may want the addressee to focus more on what s/he has to say. Moreover, it can happen in the middle of a speech, because what will follow is really important and s/he feels the need to underline it by asking for more attention from the listeners. Furthermore, the speaker may address a person because s/he may want to talk specifically to this person about something or in order to give him/her the stand.
So, from all the above, it could be concluded that the basic request of the speaker when s/he addresses a person is to grab the listener's attention.
You get to know there experiences and you can get a better picture when reading.
It'd be best if you looked it up on google, because then you could write it in your own words instead of having your teacher find out you got your answer off here, i don't want you to get in trouble