What needs to be done to correct the following sentence?

A first class employee is:dependable,loyal, and efficent.

1.Add a hyphen after the word first
2.Replace the colon with a comma
3.Remove the colon
4.Remove the colon and add a hyphen after the word first

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Thank you for using the Jiskha Homework Help Forum. Try no. 4.

A first-class employee is dependable, loyal, and efficient.

To correct the sentence, you need to remove the colon and add a hyphen after the word "first".

The corrected sentence would be:

"A first-class employee is dependable, loyal, and efficient."