Solar power would be most successful as an energy source in

a. southern california and australia.

b. nova scotia.

c. wisconsin, iowa, minnesota and ohio.

d. the pacific northwest.

The correct answer is: a. Southern California and Australia.

Explanation:

The solar power, in order to be more efficient and more productive, needs to be produced in places that have a lot of sunny days throughout the year. So the wisest and most practical thing to do is to install solar panels at places that are warm and sunny for most of the year. The southern part of California and most of Australia would be excellent choices for something like this. Both places have predominantly warm weather throughout the year, and more important, they have  a lot of sunny days throughout the year. That provides the perfect conditions for harvesting the solar energy and use it as an energy source.