Decide whether each sentence given below needs a definite article. If it does, then select a reason from the list. (Note: Not all sentences will require a definite article) 

1. A discussion and conclusion will take place in _ final chapter 
2. Morgan (1987) studied this in _ detail and found a suitable threshold.
3. Temperatures in summer often soar very high in _ Middle East.
4. I was hoping that _ participants in the lab would have more chance of success.
5. _ Senior Manager should be made aware of this as soon as possible.
6._ poverty is a real problem in the region.
7.One member arrived quite late so the Manager asked _ member to go and wait outside.

Reasons 
a) The noun has already been mentioned
b) The term can only mean one 
c) The noun is representing its entire group
d) There is a direct association from the surroundings
e) 'The ' is part of its name 

Answer
1 - b 
2- no article 
3- e 
4 - d 
5 - c 
6 - no article 
7 - a