English Language · English

Rearrange the following sentence parts to form a meaningful and grammatically correct paragraph: P. He created mockups of each screen the user would view in order to build the user interface. Q. He programmed the app's features and response, writing the fundamental logic. R. He fixed errors and made sure the app ran well by testing it on a variety of devices. S. He made the finished product available for download by uploading it to the app store.