How do you write the letter c in hiragana?

The letter "c" doesn't exist in Hiragana. Hiragana is a Japanese syllabary, which means it represents syllables, not individual letters.

To represent the sound "c" in Hiragana, you would typically use the syllable "ka" (か), which is pronounced like "kah".

For example, the word "cat" would be written as "ねこ" (neko), which is pronounced "neh-koh."