The correct option is
C Thallophyta
Biological classification of Chara :-
Division :- Thallophyta
Sub division :- Algae
Class :- Charophyceae
Order :- Charales
Family :- Characeae
Genus :- Chara
Chara is a fresh water form, which generally grows submerged in water and remain attached to the bottom with the help of rhizoids. Some species like chara battica may be found in Saline water.
Hence, correct answer is option B.