Which among the following is a synthetic plant hormone?
Synthetic plant hormones are synthetic growth inhibitors which have a pronounced effect on the growth and development of plants. 2 morphactins, flurenol and chloroflurenolmethyl are well known. Morphactins in combination with 2, 4- D have been found to be effective weedicides. Synthetic auxins are extensively used as herbicides, the most widely known being 2, 4-D and the notorious 2, 4, 5-T, which were used in a 1:1 combination as agent orange during the Vietnam war and sprayed over the Vietnam forests as a defoliant. Thus, the correct answer is option C.