These are my last two questions and I don't understand which is correct for either question

Which of the following will increase the overall demand for homes? Select one: a. A decrease in interest rates Ob. A decrease in consumer income c. A decrease in the price of homes Od. An increase in the supply of homes Question 6 Not yet answered Points out of 1:00 P Flag question Average GDP is: Select one: Oa. Also known as GDP Ob. Also known as per capita GDP Oc. Also known as Real GDP Od. The value of the factors of production used to produce output in a country