Question

until one struck an oil platform in 1995, rogue waves were widely considered to be marine myths. but the eighty - four - foot wave came suddenly out of a sea filled with waves half its size. scientists have two possible explanations for these random, oversized waves. smaller waves moving at different rates may combine in just the right way. or winds moving against an ocean current may increase a waves height. fortunately these waves are rarely seen. most sailors, however, no longer believe tales of rogue waves are empty fables.
rogue waves are

○ unpredictable

○ transparent

○ experimental

○ continuous

Explanation:

The text describes rogue waves as "random, oversized waves" and mentions they "came suddenly" and "are rarely seen". "Unpredictable" fits as random and sudden events are hard to predict. "Transparent" (about wave visibility, not supported), "experimental" (no experimental context), and "continuous" (rarely seen, not continuous) don't match.

Answer:

A. unpredictable