Final answer:
Blood agar is used to identify bacteria that destroy RBC, including Streptococcus pyogenes.
Step-by-step explanation:
The statement is true. Blood agar is indeed used to identify bacteria that destroy red blood cells (RBC), such as Streptococcus pyogenes. Blood agar is a type of growth medium that is supplemented with red blood cells, and it becomes transparent in the presence of hemolytic bacteria that destroy RBC. This transparency can be observed as tiny clear colonies on the agar plate.