The correct answer is option 3, which states that Fischer projection of the molecule is its most stable conformation. This statement is not correct because a Fischer projection is not a representation of the molecule`s conformation or stability, but rather a way to depict the spatial arrangement of groups around a chiral carbon.

Option 1 states that Fischer projection represents the molecule in an eclipsed conformation. This statement is incorrect because a Fischer projection does not provide information about the conformation of the molecule. It only shows the relative positions of groups on a chiral carbon, with horizontal lines representing groups pointing towards the viewer and vertical lines representing groups pointing away from the viewer.

Option 2 states that Newman projection can be represented in eclipsed, staggered, and skew conformations. This statement is correct. In a Newman projection, the molecule is viewed along the carbon-carbon bond axis, and the groups are represented as lines. The conformations can be depicted as eclipsed (when the groups are directly in front of each other), staggered (when the groups are staggered), or skew (when the groups are neither eclipsed nor staggered).

Option 4 states that in Sawhorse projections, the lines are inclined at an angle of 120 degrees to each other. This