Answer:
i think it's A but I'm not sure
In 1936, Landon sought the Republican presidential nomination opposing the re-election of Roosevelt. ... Landon proved to be an ineffective campaigner who rarely traveled. Most of the attacks on Roosevelt and Social Security were developed by Republican campaigners rather than Landon himself.
He should consult an archaeologist. They study ancient studies looking for remains of buildings, objects, people, etc. They learn a lot about our past and what our ancestors were like through archaeology.
The answer is 1918' or if you are going to the nearest decade that would be the 1920's.