In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select 'no improvement'. My brother and I would enjoy (chasing) the butterflies amidst our own simple, innocuous games.?

Option 4 : No improvement

The correct answer is No improvement

• If we look at the sentence carefully, we can figure out that the author is recounting previously spent time or recalling a memory wherein (s)he and her/his brother used to chase butterflies
• The form would + V1 indicates the past tense wherein a previous experience or earlier incident is being talked about
• In the above form, it is succeeded by the infinitive + ing 
• Examples: I enjoy reading books, My grandfather would love telling stories, etc.
• All other options would lead to grammatically incorrect constructions.