In this image, which blue letters represent polar covalent bonds. select them by going by the blue letters.

The answer to your question is  A, C, and F

Explanation:

Polar covalent bonds are formed between two nonmetals which difference of electronegativity is between 0.5 and 1.7. Use this rule to determine which bonds are polar covalent bonds.

A)  H and O     3.44 - 2.2 = 1.24           Polar covalent bond

B)  C and H      2.55 - 2.2 = 0.35        

C)  C and O      3.44 - 2.55 = 0.87        Polar covalent bond

D)  C and C      2.55 - 2.55 = 0

E)  N and C      3.04 - 2.55 = 0.49      

F)  N and H      3.04 - 2.2 = 0.84          Polar covalent bond

look at this it will give you up to 17 answers