Final answer:
The question 'What is the measure of ABC 50°?' lacks sufficient context or information to provide an answer. The options given (A to D) cannot be evaluated without additional information. A more detailed problem description or a diagram is needed to solve this mathematical angle measurement question.
The correct option is not given.
Step-by-step explanation:
The phrasing of the question 'What is the measure of ABC 50°?' is a bit unclear, but it appears to be an incomplete mathematics problem related to angles.
The typical form of such a question might specify a diagram or provide additional angles to determine the measurement 'ABC.' Since the problem, as stated, does not provide sufficient information to ascertain an answer, it is not possible to determine the correct measurement or to select from the provided options (A. 260°, B. 100°, C. 3100, or D. 130°).
If you have additional information or a diagram that accompanies this problem, please provide it so that a more accurate answer can be given. Mathematics often requires complete information, especially in geometry problems involving angles, to find the correct solution.
The correct option is not given.