Multiple choice Directions: Select the option that spells the word correctly: Mascular Musqular Muscular Musculer Reveal answer Fill a bubble to check yourself C Correct answer Explanation Muscular is the correct spelling for an adjective relating to muscles. The suffix ar is used here, which is a common ending for adjectives, though it is sometimes mistaken for er. Options A, B, and D use incorrect vowels or consonants.