Your scores on the pft will affect your grade question 1 options: true false

You would need to take a picture so i can see

Answertechnician (a) is correct;

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.

Iwould say the answer is d