Five sentences related to a topic are given below in a jumbled order. Four of them form a coherent and unified paragraph. Identify the odd sentence that does not go with the four. Key in the number of the option that you choose.

1.Socrates told us that 'the unexamined life is not worth living' and that to 'know thyself' is the path to true wisdom

2.It suggests that you should adopt an ancient rhetorical method favored by the likes of Julius Caesar and known as 'illeism' - or speaking about yourself in the third person.

3.Research has shown that people who are prone to rumination also often suffer from impaired decision making under pressure and are at a substantially increased risk of depression.

4.Simple rumination - the process of churning your concerns around in your head - is not the way to achieve self-realization.

5.The idea is that this small change in perspective can clear your emotional fog, allowing you to see past your biases.