Identifying the main idea and supporting details in a reading is an important step in a. writing a test question c. making an inference b. making your teacher happy d. none of the above

identifying the main idea and supporting details in a reading is an important step in C. Making a inference.  

the meaning of inference- An inference is an idea or conclusion that's drawn from evidence and reasoning. An inference is an educated guess. We learn about some things by experiencing them first-hand, but we gain other knowledge by inference — the process of inferring things based on what is already known. (https://learning.blogs.nytimes.com/2015/09/02/skills-and-strategies-making-inferences/)

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c.

making an inference

Explanation:

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i believe the answer is b. we

the economic activity signified in that scenario is a. production

in general, market production makes reference to the elaboration of a product or service which is destinated for economic purposes (to be sold) at money-price in a market. such product or service has to be principally tradable for money.

there is no money exchange involved in distribution, generalized reciprocity or balanced reciprocity.