To run efficiently and productively, a fusion reaction must operate at temperatures greater than __ degrees C.
A) 100
B) 2,000
C) 1,000,000
D) 100,000,000
E) 350,000,000
d
A) 100
B) 2,000
C) 1,000,000
D) 100,000,000
E) 350,000,000
d