Help plzzzzzz Which sentence uses the word volcano or volcanoes as figurative language?

a
The tension among the 6th-grade girls feels like a volcano threatening to erupt.
b
The 5th graders will have their volcano models with them for science today.
c
The problem with the 8th-grade volcano project has been resolved.
d
The 7th-grade class learned today that not all volcanoes erupt violently.