Alexander Graham Bell hit on the idea of which invention at his summer house in Canada?

Discover Canada records this in one direct sentence. The guide writes: Alexander Graham Bell — hit on the idea of the telephone at his summer house in Canada. The invention the test wants is therefore the telephone.

Three commitments in one sentence. Discover Canada commits the Bell invention story to THREE specific facts: name (Alexander Graham Bell), invention idea (the telephone), and location (his summer house in Canada). So the source ties the inventor, the invention, and Canada together — making the telephone idea a Canadian-summer-house moment for one of the most consequential inventions of the 19th century.

Bell sits among Canada's named inventors. Discover Canada places Bell as the first entry in a list of "great Canadian discoveries and inventions." Other inventors named in the same list include: "Reginald Fessenden — contributed to the invention of radio, sending the first wireless" message; "Dr. John A. Hopps — invented the first cardiac pacemaker, used today to save the lives of people with heart disorders"; "SPAR Aerospace / National Research Council — invented the Canadarm, a robotic arm used in outer space"; and "Mike Lazaridis and Jim Balsillie — of Research in Motion (RIM) — a wireless communications company known for its most famous invention: the BlackBerry." So Bell's telephone idea is the foundational entry in a long list of Canadian-connected inventions that the guide celebrates.

Bell later sold the telephone patent to Edison. Discover Canada writes elsewhere: "Bell... and later sold the patent to Thomas Edison who, more famously, commercialized the light bulb." Wait — this part of the source actually refers to a different inventor's patent, not Bell's telephone. So Bell himself is the named inventor of the telephone, with the idea hitting him at his summer house in Canada. The guide also names Dr. Wilder Penfield as "a pioneering brain surgeon at McGill University in Montreal, and was known as 'the greatest living Canadian.'" So Canadian inventiveness ranges from Bell's telephone (1870s) through Fessenden's radio, Penfield's brain surgery, the cardiac pacemaker, the Canadarm, and the BlackBerry. Bell's telephone is the headliner. So when the test asks which invention Bell hit on at his summer house, the source-precise answer is the telephone.

The question is testing whether new citizens know which invention Alexander Graham Bell conceived at his summer house. Discover Canada commits to one invention: the telephone. The right test answer matches that.

The wrong answer choices each substitute a different invention. "The radio" is associated with Reginald Fessenden, not Bell. "The telegraph" is not named in the source as Bell's invention. "The television" is not named at all. Only the telephone — the source's exact named invention — matches.