Concept:The letters are rearranged according to a fixed position pattern.Explanation:For CODING, write positions as C1O2D3I4N5G6.The coded form IGCDON uses positions 4,6,1,3,2,5.Apply the same order to MATTER: positions are M1A2T3T4E5R6.Taking positions 4,6,1,3,2,5 gives T,R,M,T,A,E.So the coded word is TRMTAE.Answer:Option C: TRMTAE