Explanation : It has three terms.
After alignment—‘no goats are bears’ and ‘some bears
E + I = O. So the conclusion is Some rabbits are not
goats. Hence, I follows. III and IV also make a complementary pair.
Explanation : A + A = A, ‘All branches are trees’. Conclusion I
follows. The immediate inference of ‘All branches are
trees’ is ‘Some trees are branches’, that is conclusion IV.
So, option (a)’ is valid.