4 Element X is represented by 13X. Which statement about element X is correct?
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A An atom of X contains 13 protons and 13 neutrons.
B An atom of X contains 27 protons and 13 electrons.
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C X forms an ion by gaining electrons.
DX is placed in Group III of the Periodic Table.

Ithink is a because if say increased in electronegativity

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

Answer (b) supersaturation;