The correct option is C Sporangium
Cellular slime moulds start their life as haploid and uninucleate cells called myxamoebae. When the food nearly get exhausted and the amoeboid cells get aggregated but do not fuse is known as pseudoplasmodium. The cells of pseudoplasmodium form sporocarp (fruiting body) which bear a sporangium at its terminal end and produces spores. The spore germinate to produce myxamoebae. Thus, the correct answer is C.