Hi! :)
Answer: A. Proposing that your neighborhood increases the land set aside for parks.
Answer: inferred
An inferred meaning is one that is not explicitly stated by the author, but that is hinted at throughout a passage. This is usually done through the use of various rhetorical and literary devices, such as characterization, symbols, motifs, setting and mood.
If you are trying to correct it, the answer would be...
While visiting Washington, D.C., we went to the Lincoln Memorial and the Vietnam Memorial.
Answer is A), hope i helped