Answer: D. Quantitative, Independent
Explanation:
Based on the information given in the question, the response variable is quantitative while the sampling is independent.
Independent samples refers to the samples which are randomly selected in such a way that the observations aren't dependent on the values of the other observations.
Quantitative variables refers to the numerical variables which can be in form of percents, counts, or numbers.
Since the city council randomly selects 1000 married couples from the city, then the answer is "Quantitative, Independent".