Statements : All branches are flowers. All flowers are leaves. Conclusions : I. All branches are leaves. II. All leaves are branches. III. All flowers are branches. IV. Some leaves are branches.

Answer: Option B

Since both the premises are universal and affirmative, the conclusion must be universal affirmative and should not contain the middle term. So, it follows that 'All branches are leaves'. Thus, I follows. IV is the converse of this conclusion and so it also holds.