The answer is B.
"Grandma taught me to make cheesecake" is the only sentence that makes sense when it stands alone.
1) Why did you come to Marion's party? Had you been invited?
2) The meeting was so chaotic. Had it been planned by anyone?
3) How long had the body been frozen before the scientists found it?
4) Had the man been known to the police when he turned up in the town?
5) How many times had your application been rejected before you succeeded?
6) Why did you take your raincoat? Had rainy weather been forecast | forecasted?
7) Had the parcel just been delivered when I arrived?
8) How long had it been forbidden before it was allowed again?
9) Why did the police arrive along with the firemen? Had the house been set on fire?
10) I didn't get the money on Friday. Had it been sent a long time before that?
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I hope I helped you ^_^</h2>
The word being asked in the given above is technical courses. Technical schools is a general term is a general term that is concerned more on the employment, preparing students for skilled or trained labors. The courses include welding, culinary, office management, etc.