Multiple choice

Directions: Choose a suitable option to fill in the blank:

An arthropod is an invertebrate with a segmented body and ____.

  1. hard outer shells

  2. the hard outer shell

  3. a hard outer shell

  4. the hard outer shells
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sentence has "an arthropod" (singular), so the description must be singular: "a hard outer shell." Options with "shell(s)" are wrong because they don't maintain subject-verb consistency and "the" would incorrectly specify a particular shell.

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