What is an appropriate stepwise synthesis for the following synthesis that uses ethyl 3-methylbutanoate as the only source of carbon and using any other reagents necessary

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

Aseasonal prevailing wind in the region of south and southeast asia, blowing from the southwest between may and september and bringing rain (the wet monsoon ), or from the northeast between october and april (the dry monsoon ).