I think B. I hope this helps.
Answer:
<em><u>Solar Cell for Transportation.</u></em>
<em><u>Solar Cell for Transportation.Solar Cells in Calculators.</u></em>
<em><u>Solar Cell for Transportation.Solar Cells in Calculators.Solar Cell Panels. </u></em>
Explanation:
hope this helps you!!
Heat & Pressure ( So I guess in this answer choices it's " Heat up" )
The reason it's not " melt " because if melting were to take place then that would make Magma, and magma isn't metamorphic rock.