|Question 3Verbal

Source Texts

Text
As with other river deltas, the Parana River delta is       : it is a constantly evolving network of channels and strips of land that change in size and shape as the river deposits new sedimentary particles where the river meets the waters of the Atlantic Ocean.
Which choice completes the text with the most logical and precise word or phrase?
dynamic
A
immutable
B
sustainable
C
unrivaled
D