The inception of ripening in grape is termed as

Answer: Option C

The inception of ripening in grape is termed Verasion.
It is the onset of the ripening of the grapes. The official definition of veraison is "change of colour of the grape berries".
The trigger of veraison is unknown but may signify the seed reaching maturity, an unlikely signal, however, because seedless berries also proceed through veraison.