Answer:
A). Hope.
Step-by-step explanation:
The mood is exemplified as the ambiance or atmosphere created by the author through the descriptions and use of words that assist to evoke the senses/emotions of the readers. The author usually sets up the mood by establishing a setting that appeals to their emotions and helps invoke the desired response from them.
In the given example, the bolded phrase 'lift our nation' imparts a sense of 'hope' into the audience by appealing to their emotions that help them anticipate the bright future of their nation(free from racial injustices). These words create a hopeful, positive, and emotional atmosphere(mood) among the audience that elicits the desired emotional response from them. Thus, option A is the correct answer.