Question

a 2013 analysis by people from universities in colorado and massachusetts demonstrated that too much exposure to electrical lighting can disrupt healthy sleep patterns.
strong source information and a strong reporting verb
weak source information
a weak reporting verb
no source information or reporting verb

Explanation:

The source is from universities in Colorado and Massachusetts which gives it credibility (strong source). The reporting verb "demonstrated" is a strong one indicating evidence - based findings.

Answer:

Strong Source Information and a Strong Reporting Verb