Understanding Subject-Verb Agreement in English Sentences
In which sentence do the subject and verb agree?
Nobody but Dominic know the answer to the riddle my father told.
Bears and monkeys, both mammals, shares similar behaviors with humans.
The soccer team run laps around the field to warm up before a game.
Marlo, the oldest in the family, often reads to her little brother and sister.
Answer: Marlo, the oldest in the family, often reads to her little brother and sister.
I'm sorry your question was not answered sooner. I doubt you will still need this answer but for the sake of others I went ahead to answer.
When a subject and a verb are said to agree, it means that the verb is the same number as the subject. This means that if the subject is in plural, the verb must be in plural as well and if the subject is singular, the verb must be singular as well.
'Marlo' is a singular subject and the verb that would complement this is 'reads' because it is a singular number as well.
Answer: Marlo, the oldest in the family, often reads to her little brother and sister.
Explanation: Because this has a subject and a verb, so they both agree