Read the passage
(1) the umbrella dates back more than 3,000 years to mesopotamia. (2) that ancient land was located in the middle east. (3) the middle east is a hot
and sunny part of the world. (4) royalty there demanded protection from the sun. (5) people developed the umbrella for this purpose. (6) use of the
umbrella as a sunshade then spread to ancient europe. (7) in fact, if you analyze the origin of the word umbrella, you will see that it reflects the
umbrella's original purpose. (8) umbrella comes from the latin word umbra. (9) umbra means "shade." (10) eventually, the romans used the umbrella
to protect themselves from the rain. (11) they used the umbrella to protect themselves from the sun as well. (12) today, umbrellas are used mainly as
raingear.
which is the most effective way to combine sentences 4 and 57
o royalty there, demanding protection from the sun, so people developed the umbrella for this purpose.
o people developed the umbrella for this purpose, royalty having had demanded protection from the sun.
o people developed the umbrella for the purpose of protection from the sun, which royalty demanded.
royalty there demanded protection from the sun, and people developed the umbrella for this purpose.

"People developed the umbrella for the purpose of protection from the sun, which royalty demanded."

Explanation:

This is because...

- Royalty there, demanding protection from the sun, so people developed the umbrella for this purpose.

This doesn't make sense and is definitely not effective since the whole sentence is all over the place. It is not concise nor clear. In other words, the sentence does not have a proper flow.

- People developed the umbrella for this purpose, royalty having had demanded protection from the sun.

What's the purpose? It again isn't to the point and also seems a bit over the place. In other words, the sentence does not have a proper flow.

- People developed the umbrella for the purpose of protection from the sun, which royalty demanded.

This sentence makes a lot of sense as it talks about the development and the purpose right after. It is not off track and gets straight to the point. Also, the sentence has a flow and does sound pleasing in a way.

- Royalty there demanded protection from the sun, and people developed the umbrella for this purpose.

Even though this sentence may make sense and may sound better, the use of words and the placement of them does not go together. In other words, the sentence does not have a proper flow.

**excuse my repetitiveness of "the sentence does not have a proper flow". I couldn't find a better way to explain so... :)*

Hope it helped though!!

the answer is b to the question