Question

object likely from points a to b? liquid plasma solid gas

Explanation:

When heating a substance, in the solid state (before melting), temperature increases with time as heat is absorbed. In the \(A - B\) section of the graph, the temperature is rising, which is characteristic of a solid being heated (before it starts to melt). In the \(B - C\) section, there is a phase change (melting if going from solid - liquid). In the \(C - D\) section (if liquid), temperature of liquid rises. \(D - E\) is another phase change (vaporization if liquid - gas). \(E - F\) is gas phase with rising temperature.

Answer:

Solid