A dashed mirror stands to the right of this house drawing. Which of the panels (a)–(d) shows the house as it appears in the mirror?

A vertical mirror swaps left and right only: the chimney and window move to the right, the door to the left, and the weather-vane arrow now points left — panel (c). (b) is upside down (water image), (d) is a half-turn, and (a) forgets to turn the arrow round.