Will FAN & METAL If Ur First To Answer Correct :D

Is the group of words a simple sentence, a compound sentence, or a run-on sentence?

Whales swim in deep water but surface for air.

A.
simple sentence

B.
compound sentence

C.
run-on sentence

Question

Will FAN & METAL If Ur First To Answer Correct :D

Is the group of words a simple sentence, a compound sentence, or a run-on sentence? 

Whales swim in deep water but surface for air.
 
  A. 
  simple sentence   
  
  B. 
  compound sentence   

  C. 
  run-on sentence

anonymous · Answer

B, compound sentence.

xx_gamergirl_xx · Answer

Ok Thx I Gave U A Metal And I Will Fan rn (R=Right N=Now RN=Right Now)

love_ranaa · Answer

Was that right, because I was thinking it was simple since it doesn't have a comma in the sentence

anonymous · Answer

It's compound due to the "but" in between. It separates the two verbs.