Question

Which of the following is a run-on

sentence
A. I practiced all day; I still spelled all of the words wrong
and failed my spelling test.
B. I practiced all day. I still spelled all of the words wrong
and failed my spelling test.
C. I practiced all day, but I still spelled all of the words
Wrong and failed my spelling test.
D. I practiced all day I still spelled all of the words wrong
and failed my spelling test.

Answer 1

The answer is D because there is no punctuating in that sentence