Consider when designing for display on a mobile device. font size all of these contrast small screen size

all of these

Explanation:

    Good application design is one that considers the knowledge the consumer already has. In this regard, application designs that value the platforms for which they were developed are valued and use conventions that are already rooted in people's minds. That's why it's important to consider color patterns, typography, responsive design, and platforms when developing an application.

answer; i believe the correct answer is layers;

i guess the correct option is letter a.

use contrasting font sizes, but the same font style