Answer:A. The swine flue was a raging fire
Explanation: A metaphor is a similie without using like or as.It is comparing the flue to a raging fire.
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It is widely accepted that the Earth’s interior is composed of several layers: the crust, the mantle and the core. Since the crust is readily accessible, scientists have been able to perform hands-on experiments to determine its composition; studies on the more distant mantle and core have more limited opportunities samples, so scientists also rely on analyses of seismic waves and gravity, as well as magnetic studies.
Kepler described the orbits of the planets as elliptical. They were thought to be circular.