Which sentences need a colon added?

Question

Select the two correct answers.
(1 point)
When thunderstorm updrafts lift
• raindrops into colder temperatures, they form hail.
The professor correctly predicted the results of her experiment,
• which showed that getting too little sleep caused people to make more mistakes.
There are three main categories of
• ecosystems freshwater, marine, and terrestrial.
A reporter summarized the
O situation "The floodwaters are finally receding, and the cleanup has begun."
Some fish have large teeth, such
• as the sheepshead fish and the
navara

Answer 1

The sentences that need a colon added are:

1. "There are three main categories of: ecosystems freshwater, marine, and terrestrial."
2. "A reporter summarized the situation: 'The floodwaters are finally receding, and the cleanup has begun.'"

These sentences require colons to introduce the list and the quote, respectively.