The longer bars on a xylophone make lower notes in comparison to the shorter bars, so your answer will be B!
Love is a special and great feeling you may have for a person or object (it's not weird loving an object). You show love by just caring for that person or thing and by showing kindness. For example (I'll use a object so it makes sense why), you probably love a book or device you may have. You show you love that book/device by taking good care of it in the sense of not throwing it on the floor and just stepping on it. You care about it so you show love towards it.
Hope that helped! <3
Answer:
I'm not sure if you need to fill in the blank, but if you do it's contrast. To create emphasis using contrast, an artist might use different shades of gray in a black and white drawing.