Answer:
an interview with a scientist, sharing the results of a study.
Step-by-step explanation:
An information source can be defined as a system or medium through which informations, knowledge and ideas may be gotten and used by an individual. An information source can either be a primary or secondary source of information. The source options for informations are television, radio, web, newspapers, journals, magazines etc.
Furthermore, a reliable source is an information source that is unbiased, trustworthy and reliable. Also, a reliable source is typically backed up by evidence from various information channels and should be accurate.
In order to validate a reliable source, it is necessary that the information provided is checked against other credible sources to verify its accuracy.
Hence, the phrase which best describes a reliable source that you could use to prepare for a debate is an interview with a scientist, sharing the results of a study because it is backed up by evidence and the scientist is considered to be an authority.