Based on pronunciation:
* 凯拉 (Kǎi Lā) This is the most common way to spell Kayla in Chinese, as it sounds very similar to the English pronunciation.
* 凯娅 (Kǎi Yà) This pronunciation is closer to the "K" sound in Kayla and is often used for names with a similar sound.
* 凯莉 (Kǎi Lì) This is a more literal translation of "Kayla" using characters that sound similar. However, it's not the most common spelling.
Other considerations:
* 凯 (Kǎi) This character is often used as the first character of a name for girls, meaning "victorious" or "triumphant."
* 拉 (Lā) This character means "to pull" or "to draw," and it's a common second character for names.
Ultimately, the best way to spell Kayla in Chinese depends on your personal preference and the context. You can choose the spelling that you find easiest to read and pronounce.