Till or glacial till is unsorted glacial sediment. Till is derived from the erosion and entrainment of material by the moving ice of a glacier.
it's a till. just try looking up the definition,
I checked and "a" is correct ty guys
Ok im gonna help all of you and say that if you do the unit 1b unit test do it yourself because literally all the people that gave answers were wrong i am never cheating after this
