Which statement describes how geography influenced the cultural development of southeast asia?

a. open seas protected the indigenous cultures of the island nations from outside influence.

b. distance from oceania prevented the migration of austronesian language, beliefs, and technology.

c. proximity to china encouraged the spread of buddhism and other practices south into indochina.

d. sea routes connecting to india ensured the prevalence of hinduism over christianity and islam.

C. Proximity to China encouraged the spread of Buddhism and other practices south into Indochina

Explanation:

The close proximity made it easier for Chinese traders and monks to traveled into Indochina territories. During the travel, these traders and monks interacted with the local people and at that time the exchange of information regarding culture and religion happened. This strengthen Buddhism influence in that area.

the first part is ocean

explanation:

it all depends on how long the hours are. i think they wouldn't approve of it. in my opinion.