In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.

An appetising and nutritious meal is always recommended because what we eat (1) ______ our senses. The effect of food on our mind, body and spirit had been the centre (2) ______ discussion even in ancient Greece, when Pythagoras argued in favour of a healthy, vegetarian (3) ______. Though at the time when the philosopher lived, in around 500 BC, the term ‘vegetarianism’ was (4) ______, his diet came to be known as ‘the Pythagorean diet'. He is known for his theory on geometry, but few are aware of his profound (5) ______ on food habits!