TASK DEFINITION: The task is about reading the given context, group and MCQs and then generating answers from the given input. MCQs are multiple choice questions in which a question is asked and few options are given, among which one or in some cases more than one can be the answer.
PROBLEM: context: A coin, a microwave, a leaf, and an egg moving at identical speeds each collide with a static hockey puck.<sep>group: mass <sep>question: Which puck slides the longest distance?<sep>A: coin<sep>B: microwave<sep>C: leaf<sep>D: egg

SOLUTION: The puck hit by the microwave slides the longest distance.

PROBLEM: context: A person is trying to stack books, lamps, flowers, and balls.<sep>group: stacking <sep>question: Which are the easiest to stack?<sep>A: books<sep>B: lamps<sep>C: flowers<sep>D: balls

SOLUTION: The books are the easiest to stack.

PROBLEM: context: A person is sliding four bricks across four hard surfaces. The first surface is covered with concrete, the second surface is covered with grease, the third surface is covered with grass, and the fourth surface is covered with rubber.<sep>group: sliding <sep>question: Which brick slides the longest distance?<sep>A: concrete<sep>B: grease<sep>C: grass<sep>D: rubber

SOLUTION:
The surface covered with grease is the easiest for the brick to slide across.