The noble gases already have a full outer shell. The noble gases break the trend by being less reactive than the elements to their left.
Among the pre-historic species associated with the LA BERA TA PITS are pleitocene ,dire wolves ,short faced bears, ground sloths, and the stste fossil of california, the saber-toothed cap..... i hope it will help you.... :)
Answer:
I think the answer for your question is the letter c