compare the position of the RPM needle when two magnets were used with position when one magnet was used​

The awsner should be : b

Common knowledgea laptop computer is more portable than a desktop computer. needs documentationone of the themes in i heard the owl call my name is the dying of the tribe’s way of life. common knowledgecell phones communicate using satellites orbiting the earth. common knowledgerobert frost wrote poetry.needs documentation“once upon a midnight dreary, while i pondered, weak and weary,” needs documentationa scientist’s opinion of the global warming issue