From (4), among industrialist, S and P, exactly two prefer coffee. From (3), P prefers tea, so the industrialist and S must be the two coffee drinkers. From (3) again, the only coffee drinkers are Q and the journalist. Hence industrialist = Q and journalist = S.
The horticulturist is R’s brother, so he is different from R. Horticulturist cannot be Q (industrialist) or S (journalist), so it must be P.
As above, the two coffee drinkers are Q and the journalist. From (4) the industrialist and S are the two coffee drinkers in the trio {industrialist, S, P}, so industrialist and S must be Q and the journalist. Therefore industrialist = Q.
We already have:
Q = industrialist (coffee), S = journalist (coffee).
Professions left for P, R, T are horticulturist, physicist, advocate.
From the data, advocate must be different from P and R, so advocate = T.
Thus tea drinkers are P, R and T, but the one who is an advocate is T.
Persons who like tea but are not an advocate are P and R only.
None of the given groups consists only of persons who like tea and are not advocates; each listed group either contains T (the advocate) or a coffee drinker.
So the correct choice is “None of these”.