If it's what I think you're talking about, I just had it on a test and it should be (C) sole,
Hope this helps
U can put an a at the beginning of the sentence which will make it sound better
The unstated assumption in this argument is "don´t eat meat" and if you do it "try to make it in small quantities".
Explanation: having a close look at the sentences, this is what is implicitly assumed-"eating large quantities of red meat is unhealthy" (do not consume meat, it can be harmfull for your health); in fact to be truly healthy, a vegetarian diet is preferable to one that includes meat. (if you really want to be healthy and follow a healthy diet, just concume veggies and get rid of meat).
Answer:
For fear of retaliation against them.
Explanation:
Douglas wouldn't want fot the boys who taught him how to read to get in trouble on his behalf. He was afraid that they would be repremended or punished for having taught him how to read.