The answer for this question would be A) Self-doubt.
The correct answer is "propositions". Propositions say something true or false about the subject of the proposition, for example "Earth is round" - Earth is the subject of the proposition, and "is round" is the statement about the subject (also referred to as the predicate).
I think the answer is D but I'm not completely sure
Nursing an flood-affected mongoose to harbor in his home, Teddy's father let his son keep the small animal when he showed no aggressive signs. Time went by, and things seemed to be going okay; Rikki would come in and out as he pleased, and guard over his son at night. But when the two cobras (Nag and Nagaina) had snuck in their home to presumably kill him, his wife and their son, he was more than proud of the mongoose when Rikki killed one snake and chased the other out of the home.