Select the correct newman projection using one of the tabs below, and drag the three groups (cl, br, and ch3) to their correct locations.

newmann projection displaying the conformation of chemical bond from front to back. In newmann projection, the front atom represented by dot and back atom represented by circle.

The given fly wedge structure is given indicating bromine is present in front of methane as both of them are coming out of the plane. Whereas chlorine is present in front of hydrogen as chlorine and hydrogen both are going in back direction. Hydrogen and methane both are present on plane and thus both are adjacent to each other in new mann projection.

The diagram for newmann projection is shown:

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.