(a)TrainTaxiTravellers(b)TrainTaxiTravellers(c)TravellersTrainTaxi(d)TrainTaxiTravellersWhich diagram best represents the relation between travellers, train and taxi?

AThree mutually intersecting circles

BThree fully separate circles

COne large circle containing the other two

DTrain and taxi as two separate circles, with travellers overlapping both ✓ Correct

Correct answer: (D) Train and taxi as two separate circles, with travellers overlapping both

Explanation

Train and taxi are two separate circles, with travellers overlapping both.

A train and a taxi are different vehicles, so their circles do not overlap.

Some travellers use the train and some use the taxi.

So the travellers circle cuts across both vehicle circles.

This gives two separate circles both intersected by a third.

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