In the sentence "Many residents I speak with share this frustration", the structure "residents I speak with" represents:
- A A non-defining relative clause that provides additional information about all residents in general.
- B A defining relative clause with the relative pronoun "whom/that" omitted, modifying the noun "residents".
- C An example of incorrect syntax where a preposition is inappropriately placed at the end of the clause.
- D A simple juxtaposition of two independent clauses connected by an implicit coordinating conjunction.