1. Correct Answer: Option B: 25 m
 2. Explanation:
     To solve this problem, we need to determine the original height of the tree trunk before it was broken. Let's break down the problem step by step:
     ● Step 1: Identify the given information.  
           ○ The trunk is broken at point C, which is 12 meters above the ground.
           ○ The broken part of the trunk touches the ground at point D, which is 5 meters away from the base of the trunk at point A.
     ● Step 2: Visualize the scenario.  
           ○ The situation forms a right triangle where:
             ○ AC is the vertical part of the trunk, which is 12 meters.
             ○ CD is the broken part of the trunk lying on the ground.
             ○ AD is the horizontal distance from the base of the trunk to where the broken part touches the ground, which is 5 meters.
     ● Step 3: Apply the Pythagorean theorem.  
           ○ In the right triangle ACD, we can use the Pythagorean theorem to find the length of the broken part CD.
           ○ According to the Pythagorean theorem:
         \[
         CD^2 = AC^2 + AD^2
         \]
         \[
         CD^2 = 12^2 + 5^2
         \]
         \[
         CD^2 = 144 + 25
         \]
         \[
         CD^2 = 169
         \]
         \[
         CD = \sqrt{169} = 13 \text{ meters}
         \]
     ● Step 4: Calculate the original height of the trunk.  
           ○ The original height of the trunk AB is the sum of the vertical part AC and the length of the broken part CD.
           ○ Therefore, the original height of the trunk is:
         \[
         AB = AC + CD = 12 + 13 = 25 \text{ meters}
         \]
     Thus, the original height of the trunk is 25 meters.