Question

Why is it important for a source to lack bias?

to ensure that the author’s position is developed
to ensure that the author takes an extreme position on a topic
to ensure that the information provides different viewpoints
to ensure that the source uses strong language

Answer 1

"to ensure that the information provides different viewpoints"

Explanation: An unbiased source presents evidence and multiple perspectives so readers can form their own informed conclusions, rather than being pushed toward an author's agenda or extreme position.