The measures of BC will be 100°. Option D is correct.
<h3>What exactly is a circle?</h3>
It is a point locus drawn equidistant from the center. The radius of the circle is the distance from the center to the circumference.
The angle at the center is twice as large as the angle at the perimeter.
BC = 2 ×∠CDB
BC=2×50°
BC= 100°
Hence option D is correct.
To learn more about the circle, refer to the link: brainly.com/question/11833983.
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