The purpose of a piece of writing can best be described using a(n) like “to entertain” or “to analyze.”

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.

a is the indefinite article

the tree invited all its friends to its lumber party. the party was at saruman's tower in isengard because saruman had killed some trees

i believe it is the first choice (1.)

because the major theme is(“both the wild and civilization have rules.”)

and also as u said,( based on what buck learns within the call of the wild, "both the wild and civilization have rules".this is true of humans within society as well.