The form of the word "tough" that best completes the sentence is option B. toughest. So the complete sentence would be: What was the toughest game you have competed in? When we add the suffix -est at the end of the base form of an adjective word, it means it is comparing in a superlative degree.
The first one is D and the second one is C
The answer should be C because the discouragement from whites was usual but the discouragement from her mother was disapointed because her mother should encourage her.