Answer:
B. Switzerland has the comparative advantage in watches.
Step-by-step explanation:
Comparative Advantage is when an economy can produce a commodity with comparatively less opportunity cost in terms of other good sacrifised, than other economy.
It can also be denoted as an economy's more relative productivity in consumption, compared to other economy.
Watch Chocolate
Switzerland 1 50
Germany 1 100
Switzerland can produce a watch by sacrifising lesser units of chocolate i.e 50, than Germany - which sacrifises 100 watches chocolates for a watch production.
Switzerland is 0.02 (1/50) times productive in watch than chocolate. Germany is lesser i.e 0.01 (1/100) time productive in watch than chocolate. Also, Germany is more productive in chocolate than watch 100X > 50X.
So, Switzerland has comparative advantage in Watches & Germany in Chocolate.