Which sentence is a run-on sentence?

a. some foods are canned; others are frozen.
b. sarah swam quickly across the lake and back again.
c. alaska is the largest state in the u. s., but it has the fewest people.
d. fencers wear metal helmets, these have wire face guards.

Read the excerpt from the odyssey then his chores being all dispatched she caught another brace of man to make his breakfast and whisk away his great door slab to let his sheep go through but he behind reset the stones as one would cap a quiver what two things are being compared in this epic simile

Read the excerpt from it's our world, too! : young people who are making a difference.the author’s purpose in this excerpt is to

Ineed ideas for this essay something easy that i can do does anyone have any ideas on what i should write on for this 100 points ! write a procedural essay with media that is 1 ½–2 pages in length. clearly state your topic, and include all steps necessary to complete the procedure. you will submit your prewriting and planning documents along with your essay.