The answer is: 4.advertising in Spanish on billboards
Advertising in spanish on billboards is an effort to target demographic in middle to lower economic power (since a large number of spanish speaking citizens in america are poor immigrants). They often used such billboards to promote a certain government officials or cheap products.
Explanation:
A nominal wage, also called a money wage, is the money you're paid by an employer for your labor. A nominal wage is not adjusted for inflation. On the other hand, a real wage is a wage adjusted for inflation. If your nominal wage increases slower than the rate of inflation, then your purchasing power will decline.
Qualitative researchers do have an inherent obligation
