✨ Jawaban Terbaik ✨
He was jealous because it is small that his figure is reflected in the mirror.
➡ He felt frustrated because his reflection in the mirror looked small.
※jealous 嫉妬深い、焼きもちを焼く → feel frustrated 悔しい、もどかしさを覚える
✕it(形式主語) is small <that(接続詞) his figure is reflected in the mirror>(真主語).
<彼の姿が鏡に映されているということ>は小さい。← 意味不明
参考にしてください。
なるほど!ありがとうございました♪