Which of the following is a run-on sentence?

a. the concert started and the music was incredible.
b. holidays always go by too quickly since i get those days off.
c. tomas was frustrated during class he forgot his book report.
d. they danced for hours; they never felt remotely tired.

Excerpt from saving the thrift store: a dramalee washington2rosa: eddie, i don’t recognize the shirt you’re wearing. when did you get it? 3louis: it doesn’t look as disheveled as the soccer shirts you wear all the time.4eddie: well, i’m not going to tiptoe through the soccer field to keep my clothes neat. (louis playfully aims a soccer ball at eddie. rosa deflects it.)5rosa: what i was trying to say is that the shirt looks really good. (louis wanders over to the morning newspaper that is still sitting on the front lawn. he leafs through it while eddie and rosa talk.) in line 5, which point is rosa making when she says eddie’s shirt looks good? a) the store must have new merchandise. b) rosa is jealous of eddie’s new shirt. c) eddie must have done his own laundry. d) eddie often wears old, tattered shirts.