Lava is rock that has undergone a physical change and has liquefied. What is known about this change? The lava gained mass.
The lava was burned into smoke.
The lava can cool back into rock.
The lava lost mass.

The lava can cool back into a rock

Explanation:

answer; i believe that the correct answer is(d) nondisjunction during meiosis;

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.