It affected women in the U.S because of how they were only there at home when usually their husbands were out fighting for the war. This provided more job opportunities for women and caused them to be the "head of the house".
We don't have enough information to answer this question, but i believe what you're trying to find is that the Muslim armies carried their faith west across the top of the entire continent.
Hopes this helps, if it doesn't please add information onto your question, like example, the choices you were given.
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B could be rewritten, like so -
From "See if the light is red or not illuminated at all, now check that the ethernet cable connecting the router and computer is securely attached"
To "Check if the light is red, or not illuminated at all. IF so, THEN check the ethernet cable connecting the router to the computer is securely attached"
