Question

31.what is the mainstay of ocean science even today?
a) exploring space
b) traveling by air
c) going to sea aboard ships
d) using advanced computer models

Explanation:

Ocean - science research often involves direct observation and data - collection in the ocean environment. Going to sea aboard ships allows scientists to sample water, study marine life, and conduct various experiments in the ocean itself. Exploring space and traveling by air are not directly related to ocean science. While computer models are useful, the mainstay still involves on - site exploration at sea.

Answer:

c) Going to sea aboard ships