The correct option is C Halophytic vegetation
The process of ecological changes that establishes a series of natural communities that are replaced over time is known as succession and is of two types primary and secondary. The primary succession of water bodies such as lakes and ponds results in the conversion of these water bodies into the land community.
Hydrosere is the primary succession of water bodies and leads to the development of the land community in aquatic environments such as lakes and ponds. Hence, the vegetation if this succession would be halophytic vegetation.