In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Fact1: erosion causes a river to become deeper and wider, Fact2: Weathering and erosion continue to shape it today., Question: Weathering causes what to become deeper and wider? (A) a landslide (B) Sediment (C) a mountain (D) a volcano (E) soils (F) rock (G) flooding (H) a river
H

Fact1: Butter is a fat that is a solid at room temperature., Fact2: Some fats are more likely to cause heart disease., Question: What can butter lead to? (A) Heart disease (B) air pollution (C) reproduction (D) destruction (E) religion (F) trees (G) heating (H) Tooth pain
A

Fact1: sandpaper is used to smooth wooden objects, Fact2: Dirt is an abrasive like sandpaper., Question: What do abrasive materials do? (A) occurs over a wide range (B) permeable walls (C) rapid changes occur (D) smooth wooden objects (E) jeans (F) destroyed crops (G) decrease strength (H) change an ecosystem
D