What Is the MOST Probable Physical Mechanism to Have Caused

question 365

Multiple Choice

What is the MOST probable physical mechanism to have caused the very long cracks and streaks that criss-cross the surface of Europa,one of the moons of Jupiter?

• A) Volcanic eruptions caused lava flows, which then froze in place.
• B) The "cracks" are frozen rivers that, in warmer times, were flowing across the moon's surface.
• C) The "cracks" are actually the tops of gigantic greenhouses, built by inhabitants of Europa to protect their cucumber crops.
• D) Tidal flexing by Jupiter cracked the icy surface, allowing subsurface fluids to gush out and freeze in place.

---

Definitions:

Unfavorable Labor Efficiency Variance

A financial term indicating that the actual labor time to produce goods or services was higher than the budgeted or standard labor time, resulting in increased costs.

Variance Report

A document that compares planned financial outcomes to actual financial outcomes, highlighting differences (variances) for analysis.

Materials Costs

These are the costs associated with the raw materials used in the manufacture of products or the provision of services.

Overtime

Additional hours worked beyond the standard working hours, often compensated at a higher pay rate than regular hours.