Answer:
Word: vivid.
Impact: show what the boy was vigorous, active, lively, energetic, effervescent and cheerful.
Explanation:
The word "vivid" can fit perfectly into the sentence shown above and encompasses the meaning of the two words enclosed in parentheses. The use of the word "vivid" shows that Sidney's brother is a very active boy and that he is excited about the game, showing himself to be very vivid, vigorous and happy,
