The correct answer is b. al, mg, li
That's because Cobalt is not a representative element since it's not found in the first 2 or the last 6 groups.
This is true bc that is how you identify pessimism
In "Neither Principles nor Ideas Are Innate", Locke refutes:
(B) Descartes' claim that certain understandings are present in the mind at birth (starting in paragraph 10)
and
(D) Augustine's claim that understanding is possible because God's omniscience lights the lamp of the mind (starting in paragraph 2)