Which of the following is an example of a run-on sentence?

People who read learn very quickly it’s a proven fact.

Many studies have shown marked improvements in vocabulary.

I like to read because it enhances my understanding of others.

You should consider reading about topics that interest you.

Question

Which of the following is an example of a run-on sentence? 

 People who read learn very quickly it’s a proven fact. 

 Many studies have shown marked improvements in vocabulary. 

 I like to read because it enhances my understanding of others. 

 You should consider reading about topics that interest you.

anonymous_user · Answer

Which do you think it is?

anonymous · Answer

I was going ot guess at D. lol @anonymous_user

asevilla5 · Answer

it's not D that for sure.

anonymous · Answer

Well that's why I need help lol @Asevilla5

anonymous_user · Answer

I think it may be A. or C. 
What do you think, @Asevilla5 ?

asevilla5 · Answer

its a