Respuesta :
The answer (B.) makes the most sense because it's the definition. Hope this helps :)
The statement that is true about supporting details is:
B. They are facts, statistics, and examples that support the main idea.
These elements guide the reader to fully understand the main idea conveyed in the topic sentence, so they clarify, expand and illustrate it. They may include facts, reasons, examples, comparisons and denitions that are helpful to support the main idea.