Question 1: D Question 2: A Question 1: Question analysis: Young people open online stores to sell products. They personally own the means of production and engage in individual business. Individuals are both investors, operators and workers. The fruits of their labor are directly owned and controlled by individuals, which conforms to the characteristics of individual economy. Therefore, D is correct; AB does not conform to the meaning of the question, and C is incorrect.

The answer to this question is D. Question 2: Question analysis: The reason why consumers have this consumption behavior is mainly affected by information such as price reduction and promotion. This shows that the price level is an important factor affecting consumption. At the same time, these merchants have opened Weibo for sales, which has driven the growth of consumption, indicating that production creates momentum for consumption, so ②④ are correct; ①③ both reflect the counteraction of consumption on production, which does not conform to the meaning of the question. The answer to this question is A.