Concept:To convert metres to centimetres, multiply by 100 because 1m=100cm.Explanation:We need to convert 12.03m into centimetres.Since 1m=100cm,12.03m=12.03×100cm.Multiplying by 100 moves the decimal point two places to the right:12.03×100=1203.Thus, 12.03m=1203cm.Answer:C.1203cm