Answer:
A. a growing industrial economy
D. a focus on agricultural activity
Step-by-step explanation:
What characterizes a developing economy is the rapid pace of GDP and improved social indicators such as rising living standards and the rise of the middle class. GDP will be accelerated as production in the country increases. This production depends on the productive structure of the country, which may be more industrial, such as China, or more agricultural, such as Brazil. In both cases, increased production combined with improved indicators show that the economy is developing. Therefore, options (A) and (D) are correct.