Which of the following is spelled correctly?
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A
Excercise
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B
Exercise
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C
Exersize
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D
Excersise
"Exercise" is spelled correctly with 'e' after 'x' and 'c' before 'i-s-e'.
A) Excercise
Incorrectly inserts 'c' after 'x'—violates Latin root exercere adaptation where 'x' already contains the /ks/ sound without additional 'c'.
B) Exercise
Correctly spelled following Latin root exercere (to drive on, busy) with standard English adaptation preserving 'e-x-e-r-c-i-s-e' sequence without extraneous letters.
C) Exersize
Incorrectly substitutes 'z' for 'c' before 'i-s-e'—violates standard spelling pattern where 'c' produces /s/ sound before 'i' in this word family.
D) Excersise
Incorrectly transposes 'c' and 'e' after 'x'—creates nonstandard 'x-c-e' sequence that doesn't match the word's etymological structure.
Conclusion
"Exercise" follows consistent English spelling patterns for Latin-derived nouns with the 'e-x-e-r-c-i-s-e' sequence preserved. Only option B maintains this pattern without inserting extraneous 'c', substituting 'z' for 'c', or transposing letters that alter phonetic structure.