Finally, Client $C$ is in a very competitive category with equal market share of the top three brands. Our client is convinced that they have changed every marketing$-$mix variable possible except for package design. Since the three competitive brands are typically displayed side$-$by$-$side, they want us to determine what factors of package design $($i$.$e$.,$ size, shape, color, texture, and so on$)$ cause an increase in awareness, preference for, and intention to buy the brand. What do you recommend for the appropriate research design?

Describe what research design you would recommend for each client.

For each research design you selected for the three clients, discuss why you believe your choice of design is the correct choice.