Concept:Use preference clues to assign each profession logically.
Explanation:From (iii): Tea lovers are A, C and advocate; coffee lovers are B and journalist.
So B is not the journalist, and A and C are not the advocate.
From (iv): Industrialist, D and A are friends; two of them prefer coffee. Since A prefers tea, both industrialist and D must prefer coffee.
The only coffee-lovers are B and the journalist, so D = journalist and B = industrialist.
Now E must be the advocate.
Professions left for A and C are horticulturist and physicist.
From (v): Horticulturist is C's brother, so horticulturist cannot be C.
Therefore A is horticulturist and C is physicist.
Answer:C is the Physicist.