Answer:
D. 25
Step-by-step explanation:
By geometric mean property:
[tex] {(12)}^{2} = LM\times JM \\ \\ 144 = LM\times16 \\ \\ LM = \frac{144}{16} \\ \\ LM = 9 \\ \\ [/tex]
JL = JM + LM = 16 + 9 = 25
