What must be supported by empirical evidence

Answer8.0m;

Ibelieve the answer is d. macula  hope my answer has you : )

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.

The capital letters and lowercase letters smoothly run together without lifting the pen