Answer: Gneiss is a type of metamorphic rock that forms when a sedimentary or igneous rock is exposed to extreme temperatures and pressure
Explanation:
The answer to the question above is "experienced a loss condition" which the situation that Louis will face if he decided to make another gadget. The net income or loss is the difference between cost and benefit of a project or a business. A loss will occur if the cost is higher than the benefit in a business or a project.
It's being estimated that dinosaurs lived on Earth from about 237 million years ago to about 66 million years ago. So answers B and D are definately too "old", while answer A is too "young". I'd pick answer C as it's most probable.
