The statement that is true of the electoral college system is that "It encourages candidates to concentrate their campaigns in competitive, populous states."
This is because the electoral college comprises the Senate members and the House of Representatives members.
The number of representatives from each state depends on their population.
Thus, when a Presidential candidate wins elections in more populous states, it is expected that all the representatives from that state would vote for him, thereby gaining more votes.
Hence, the electoral college system would encourage Presidential candidates to look for means of winning the states with more population because they equate to more electoral votes.
Therefore, in this case, the correct answer is option C.
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