Verified Answer :

The Representative elements are the first two relations and the last six relations of the Periodic Table. The Transition elements  are in three series in periodic table and they all are metals.
therefore,
A) lithium is Representative element
B) platinum isTransition element
C) promethium isTransition element
D) carbon is Representative element

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Answer:

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Explanation:

A) lithium is a representative element

B) platinum is a transition element

C) promethium is a transition element

D) carbon is a representative element

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