What would earth lack if earth didn’t have a liquid outer core? its gravitational pull its magnetic field its geometric shape its chemical composition

In the passage this question was provided for, you should have been able to find the fallowing text, "Therefore it is hypothesized that Earth’s magnetic field is being produced by ionized iron moving about in the Earth’s liquid outer core. If Earth didn’t have a liquid (iron) outer core the Earth wouldn’t have its magnetic field."

Magnetic Field

i would say it is