The answer is C), playing a simple scale.
The sentence should be this: She demonstrates how to tune her instrument and she also played the simple scale.
Answer:
Machines have eliminated low-skill jobs because they have done the work the people used to be doing themselves. For example the cotton gin, replaced people having to pluck cotton off of bushes.
Explanation:
Halley's Comet does not have the size or mass to affect Neptune's orbit at all. perhaps a collision with a small planet would mess up Neptune's orbit but not Halley's comet
c. ABA because the 1st and 3rd line rhyme
