Final answer:
The correct length of segment QM is half of the length of segment QP, which is 17.3 units.
Step-by-step explanation:
The question asks us to find the length of segment QM given that Linet bisects segment OP at point M, and the length of segment QP is 34.6 units.
Because point M is the midpoint of segment OP, we know that OM and MP are equal in length. Since QP is the entire length of the segment from point Q to point P, we can determine that QM (which is a part of QP and is equal to OM) will be half of the length of QP.
Therefore, if QP equals 34.6 units, then QM (also equal to OM) will be 34.6 units divided by 2, which is 17.3 units. The correct answer is A. 17.3.