フリー問題

問題文

A builder is asked why one part on a screen has somewhere to put what it receives and another part does not. Which statement describes the difference?

選択肢

1. A part that only shows text on the screen needs no store behind it at all, while a part that takes something in has to name the channel where it should land
2. A part that only shows text on the screen needs no store behind it at all, while a part that takes something in has to name the target where it should land
3. A part that only shows text on the screen needs no reading behind it at all, while a part that takes something in has to name the target where it should land
4. A part that only shows text on the screen needs no reading behind it at all, while a part that takes something in has to name the channel where it should land