You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
French_and_Indian_War

Context:
In the aftermath of generally poor French results in most theaters of the Seven Years' War in 1758, France's new foreign minister, the duc de Choiseul, decided to focus on an invasion of Britain, to draw British resources away from North America and the European mainland. The invasion failed both militarily and politically, as Pitt again planned significant campaigns against New France, and sent funds to Britain's ally on the mainland, Prussia, and the French Navy failed in the 1759 naval battles at Lagos and Quiberon Bay. In one piece of good fortune, some French supply ships managed to depart France, eluding the British blockade of the French coast.

Question:
In 1758 what was duc de Choiseul's plan for focused military efforts?

invasion of Britain, to draw British resources away from North America and the European mainland