Answer: Fabio's attitude changed because he'd be in the parade.
Explanation: Fabio is excited to be able to participate in the parade. The focus of the question isn't on why he'd be in the parade or how? But on what makes his attitude change. Every other factor mentioned corroborates that he'd be participating in the parade.
The answer to this question is otto
Answer: d. When he first enters the banquet hall, Macbeth appears cheerful.
Explanation: Subject-verb agreement means that the verb and the subject must agree in number, this means that if the subject is singular the verb needs to be also singular, and the same applies when the subject is plural. We must be careful with the final "s" in the verbs conjugated in the third person of singular (he, she, it). In the given sentences the option "a" is incorrect because the subject is "Lady Macbeth" (she) so the verb should be "walks", in the option "b" the correct it should say "Banquo, not Fleance, is killed" because the subject is singular (Banquo), the option "c" should be, "Fleance, without Banquo, escapes" (because the subject is Fleance), and the correct answer is "d" because it says "he first enters" and "Macbeth appears".
B. This shows that the translators were highly efficient and skilled in coding and de-coding without a single error.