The best option for revising the underlined sentences with more precise language and vocabulary is:
A.
"An octopus can almost instantaneously match the colors, patterns, and textures of its surroundings. Predators such as dolphins, eels, and sharks swim by without even noticing them!"
This option uses more specific terms like "match the colors, patterns, and textures," and it accurately describes the types of predators, enhancing the clarity and detail of the information.