Well, after researching, The correct answer would be B. He is not entirely trustworthy.
When using if and can't they both have the similar "self doubt" aspect in them. Like "If I can do it..." and "I can"t do it." Both of these statements are basically questioning their self worth.
Greg gets along better with other people at the end of the story because he leans a valuable lesson from fighting the thugs with Lemon Brown.
Answer:
because sometimes an audience will be more or less knowledged. using smaller words for younger audiences, or more tasteful words for a more professional setting.
Explanation: