Answer:
The zoo needs to raise $190,000 to fund the construction of the new enclosure.
Explanation:
The total cost of Quote 2 is $640,000, and the zoo already has grants and sponsorship of $450,000. Therefore, they need to raise the remaining amount:
$640,000 - $450,000 = $190,000
The zoo needs to raise $190,000 to fund the construction of the new enclosure.