Which component allows current to flow in one direction

Statements:

Only Biscuit are Chocolate.

Only few Biscuit are Snacks.

All Snacks are Beverages.

Conclusion:

Statements:

All lion are tiger

No tiger is a cat

No lion is a dog

Conclusions:

I. Some lion are not cat

II. Some tiger are not dog

Statements:

Some cubes are cuboids.

Only few cuboids are squares.

No square is a circle.

All circles are triangles.

Statements: All books are pages.

Some notes are books.

All assignments are notes.

Statements:

Each hand is pump.

Every pump is tap.

Some hand are water.

Conclusions:

I. Some pump are water.

II. No water is tap.

III. Some tap are hand.

Statements:

Only Orange are Kiwi.

Some Oranges are Cherries.

Only a few Papaya is Cherry.

Conclusions:

Statement:

Only a few Banana is Guava.

Some Guava is Leopard.                            

Statements:

Only a few Products are Price.

Only Prices are Place.

No Price is Promotion.

Conclusion

Statements:

All pillow are blankets.

All blankets are quilts.

All quilts are cushions.

Conclusions:

Statements:

All tigers are phones.

Some phones are guns.

Some guns are watches.

Conclusions: