Answer:
There are eight planets in our Solar System.
Explanation:
A gerund usually ends wit -ing, so we must find the word that includes that.
Loading includes ing at the end.
Final answer: b. loading
<span>Two plastic balls suspended by strings are placed close to each other. If they have the same charge then they will repel each other.</span>
The electromagnetic wave shown above is made up of vibrating Electric fields.
I assume this is why electromagnetic waves can travel through a vacuum, due to lack of matter.