The correct answer is (b), Britain.
The men’s field hockey tournament at the 2012 Summer Olympics was held from 29 July to 11 August at the Riverbank Arena in London. The tournament was contested by 12 teams, divided into two groups of six. The top two teams from each group advanced to the semi-finals, with the winners of the semi-finals meeting in the gold medal match and the losers meeting in the bronze medal match.
Britain won the gold medal, defeating the Netherlands in the final. Germany won the bronze medal, defeating Australia in the bronze medal match.
(a) Australia finished fourth in the tournament.
(c) Germany finished third in the tournament.
(d) Netherlands finished second in the tournament.