Final answer:
In the given sentence, 'Either Jen or Scout are going to pass a note to Boo Radley,' the correct subject-verb agreement should use a singular verb because the subject closest to the verb ('Scout') is singular. The sentence should read 'Either Jen or Scout is going to pass a note to Boo Radley.'
Step-by-step explanation:
Understanding subject-verb agreement is crucial in composing grammatically correct sentences. The subject and verb must agree in number, meaning both need to be singular or both need to be plural.
For the sentence 'Either Jen or Scout are going to pass a note to Boo Radley' one might think at first glance that 'are' is the correct verb because there appear to be two subjects; however, when using 'either/or' or 'neither/nor', the verb should agree with the subject closest to it. Thus, the correct verb form should be 'is' since 'Scout' (the subject closest to the verb) is singular: 'Either Jen or Scout is going to pass a note to Boo Radley.'