National defense, protecting emerging industries, protecting domestic jobs, and keep money at home are most likely arguments in favor of

These arguments are in favor of Protectionism.

Protectionism is an economy theory that consists of restricting imports from other countries to protect the local industries as well as producers and workers. To do so, there are many ways of intervening, like putting tariffs on imported goods and restricting trade to an specific quantity of goods that can be imported in a given period of time (import quota).

local max is .5

step-by-step explanation:

the local maximum is for x values between 2 and 4

it looks like the x value is 2.5 and the y value is .5