(a)MercuryZincMetal(b)MetalMercuryZinc(c)MercuryZincMetal(d)MetalZincMercuryWhich diagram best represents the relation between mercury, zinc and metal?

AThree mutually intersecting circles

BMercury and zinc as two separate circles, both inside the metal circle ✓ Correct

CThree fully separate circles

DMetal inside mercury inside zinc

Correct answer: (B) Mercury and zinc as two separate circles, both inside the metal circle

Explanation

Mercury and zinc are each a kind of metal, so both circles sit inside the metal circle.

Every unit of mercury is a metal, so mercury lies within metal.

Every unit of zinc is a metal, so zinc also lies within metal.

Mercury and zinc are different metals, so their two circles stay separate.

Two separate circles enclosed by a larger metal circle fit the relation.

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