Correct option is C. $$ 36 $$
If you toss a dice two times,
The sample space is-
{(1,1),(1,2),(1,3,),(1,4),(1,5),(1,6),
(2,1),(2,2),(2,3),(2,4),(2,5),(2,6),
(3,1),(3,2),(3,3),(3,4),(3,5),(3,6),
(4,1),(4,2),(4,3),(4,4),(4,5),(4,6),
(5,1),(5,2),(5,3),(5,4),(5,5),(5,6),
(6,1),(6,2),(6,3),(6,4),(6,5),(6,6)}=$$ 36 $$
Thus, number of possible outcomes is $$ 36 $$.