The answer is B, in factories, robots perform hazardous tasks
Beowulf is an Old English epic story consisting of 3,182 alliterative lines. It may be the oldest surviving long story in Old English and is commonly cited as one of the most important works of Old English literature i dont think that well help but i hope it does
The central idea would be that even though Edison made lots of horrible inventions and mistakes, without him not giving up and continuing we wouldn’t have things we use everyday. So basically keep going and don’t give up.
The apositive phrase in the sentence is "a challenging field of study"