The root crusta -can be found in a word crustacean what dose root crusta mean PLZ HELP

a ocean
b shell
c snail
d water

Read the passage. which statement would be the best summary to give the argument meaningful context? a. the passage is fine the way it is. b.th word "debate" should be removed, because it indicates disagreement. c. the word "claim" should be removed because this is not the claim. d. the sentence that begins " i personally believe" should be removed because it shows bias.