We intuitively think that if something costs more, it is better.

In order to make the hamburger in the advertisement look shiny, a food designer painted the meat with oil or paint.

4.8:20 is a sad time.

Green stands for safety, so it is often used in medical products.

6. Yellow and orange are said to stimulate appetite, so they are used in food advertisements.

7. Blue is associated with wisdom and accuracy, so it is often used in high-tech products.

About 75% children prefer purple to other colors.

The answer is for reference only.