draw the fischer projection from the skeletal structure shown below.

Explanation:

Step1: Identify the longest carbon - chain

The longest carbon - chain contains 6 carbon atoms with the carbonyl group at the end (aldehyde).

Step2: Determine the orientation of substituents

In a Fischer projection, horizontal bonds project out of the plane and vertical bonds project into the plane. For each chiral center, the OH groups on the left - hand side in the Fischer projection are on the dashed (into the plane) bonds in the skeletal structure and vice - versa.

Step3: Draw the Fischer projection

Draw a vertical chain of 6 carbon atoms. Place the aldehyde group at the top. Then, place the OH groups on the appropriate sides according to the chirality of the centers in the skeletal structure.

Answer:

(Here, a visual drawing is required. In text - based format, assume the vertical carbon chain with the aldehyde group at the top. If we number the carbons from 1 (aldehyde C) to 6, and assume the chiral centers have OH groups such that for example, on C2 the OH is on the left, on C3 the OH is on the right, on C4 the OH is on the left, on C5 the OH is on the right in the Fischer projection based on the given skeletal structure's chirality. A proper visual Fischer projection drawing should be made on paper or using a chemical drawing software.)