According to the third paragraph, researchers differed from each other in the problem of_____A. whether nuclear reaction would occur.B. whether the stars would increase its density and temperature.C. whether shock waves would occur.D. whether the uneven forces would flatten the stars.

According to the third paragraph, researchers differed from each other in the problem of_____

A. whether nuclear reaction would occur.
B. whether the stars would increase its density and temperature.
C. whether shock waves would occur.
D. whether the uneven forces would flatten the stars.

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