Fill in the blank with an appropriate option.
How can seawater from the oceans be ______ fresh water that is suitable for people to drink?

Correct option is D

The correct option to fill in the blank is (d) turned into.
Explanation: “Turned into” means to transform from one state/form to another. Here, seawater is being transformed into fresh water.
Example: The caterpillar turned into a butterfly.
Meanings of other options:
· (a) Change about – Not a correct phrasal verb.
· (b) Surrender in – Illogical.
· (c) Minced on – Not meaningful in this context.