Correct option is C
Given = REMRRE_R_EEMRRE_M_
MRME
REMR/REMR/REEMR/REMME
EMER
REMR/REERM/EEMR/REEMR
MREM
REMR/ REMR/ REEMR/REEMM
REMR is repeated first and the repeat by doubling second letter and then doubling third letter.
REME
REMR/RERR/EEEMR/REMME
hence option c is ocrrect.