The question asks for the meaning of the French verb chanter. Chanter means to sing, which is accurately defined as produire un son melodieux (to produce a melodious sound).
Singing involves using the voice to create musical or melodic sounds, which is precisely what produire un son melodieux describes.
The other options are different verbs with distinct meanings:
danser means to dance - moving the body rhythmically to music
lire means to read - interpreting written text
marcher means to walk - moving on foot
Chanter is a regular first-group verb (ending in -er). Related vocabulary includes: une chanson (a song), un chanteur/une chanteuse (a singer), and le chant (singing/the song).
