Answer:
The correct answer is D) he participants wanted to emphasize their displeasure at Russian annexation of the Crimean Peninsula.
Explanation:
In 2014, the 40th G7 summit took place in Brussels, instead of it's original location of Moscow, Russia.
Interestingly, the 39th Summit was the G8 summit which consisted of 8 of the world's most powerful countries. However, after the Russian intervention and annexation of Crimea, it was expelled from the G8 group.
As the 40th summit drew closer, the Prime Minister of Britain made it clear that the next summit would not be held in Russia and he was rallying all other members to boycott Russia.
Eventually, Brussels in Belgium was chosen as the location. Since then, all other G7 summits have excluded Russia.