Why the other options are wrong:

• Her roof needs to be replaced.: Replacing her roof is not mentioned as a reason.
• Her neighbours recently installed solar panels.: Neighbours installing solar panels is not discussed.
• She plans to sell her house soon.: Selling her house is not mentioned in the conversation.

Correct Answer: It costs less than a larger system.

Why this is correct: The installer says a 5 kW system is around $14,000 while the 7 kW system is closer to $19,000. This means the smaller system costs less than the larger one.

Why the other options are wrong:

• It requires batteries to work properly.: The installer says batteries are optional and not required for the system.
• It usually covers all of a household's electricity use.: The installer says a 5 kW system covers about half of an average household’s yearly use, rather than all of it.
• It is not suitable for Alberta winters.: The installer says panels are designed to handle Alberta winters.

Correct Answer: They can reduce the net cost if the homeowner qualifies.

Why this is correct: A qualifying homeowner can receive up to 5,000 dollars back, reducing net cost. The source does not say the original upfront payment is reduced.

Why the other options are wrong:

• They require a minimum of two years of panel ownership.: No two-year ownership condition is stated.
• They are only available for battery installations.: The grant is discussed for solar panels, without a battery-only restriction.
• They fully cover the cost of the smaller system.: The smaller system costs around 14,000 dollars before incentives, while the refund is up to 5,000, so it is not fully funded.

Correct Answer: They are optional and increase the cost.

Why this is correct: The installer says batteries are optional and most people in Red Deer skip them because they add cost and the grid is reliable. They are not required but they do increase the total price.

Why the other options are wrong:

• They are required by law in Red Deer.: The installer calls batteries optional. A legal requirement to buy them is not mentioned.
• They improve panel performance in winter.: Improving panel performance in winter is not mentioned as a benefit of batteries.
• They are included in the base price.: Batteries are described as optional and adding cost; inclusion in the quoted base price is not stated.

Correct Answer: It better matches her budget and home situation.

Why this is correct: The installer recommends the 5 kW system because of the woman's budget concerns and her roof situation. The smaller system better matches what she can spend and what her home needs.

Why the other options are wrong:

• It qualifies for a special winter discount.: A special winter discount is not mentioned.
• It produces more power than the larger system.: The 5 kW system produces less power, not more, than the larger system.
• It completely avoids any roof shading issues.: The installer says a little shade is usually fine but does not say the system completely avoids shading.

Correct Answer: The installer will prepare a detailed quote.

Why this is correct: The installer says he will arrange a full site assessment and then prepare a written quote. This is the clear next step after their conversation.

Why the other options are wrong:

• The panels will be installed immediately.: The panels will not be installed immediately - an assessment comes first.
• The woman will apply for a bank loan.: The woman does not mention applying for a bank loan.
• The woman will choose the 7 kilowatt system.: The installer recommends the 5 kW system, and the customer calls that reasonable and asks about the next step. Choosing the 7 kW system is not stated.