Answer:
C. His main issue of concern as president was civil service reform.
Explanation:
Rutherford B. Hayes hold office from 1876 till 1881 he arrived at office after a controversial win over Democrate candidate Samuel J. Tilden, with a close margin and with three states that had different results on the ballots, because of that, the democrat party accepted Hayes win as long as the new president committed to withdraw the army from the southern states tat were going through reconstruction.
The main efforts by Rutherford during his first year was to do a civil service reform, where he wanted to have politicians that deserved the office and were not there just because of patronage by someone in power.
