Final answer:
The highest temperature, 300 °C, is the most likely melting point for the linear homopolymer.
Step-by-step explanation:
The question is asking about the crystallization temperatures of a linear homopolymer. Crystallization is a process where a material solidifies into a crystal structure due to cooling or other factors.
Out of the given options, the highest temperature, 300 °C, would be the most likely melting point for the linear homopolymer.
Some polymers have a crystalline structure and can be melted at specific temperatures to form a viscous liquid, which can then be used for manufacturing objects or extruded into sheets or fibers.