Answer:
The value of n = 3
Hence, option c i.e. n = 3 is correct
Explanation:
Given the expression
Start Fraction 2 Over n End Fraction = two-thirds
it means,

Apply fraction cross multiply
if a/b = c/d, then a×d = b×c


switch sides

divide both sides by 2


Therefore, the value of n = 3
Hence, option c i.e. n = 3 is correct