Question

1. which of the following ensures that only high - quality research findings are published?

reducing bias
placebo effect
scientific journal
peer review

Explanation:

Peer - review is a process where experts in the same field evaluate research before publication. It helps filter out low - quality work and ensures high - quality findings are published. Reducing bias is important but not the sole factor for ensuring publication of high - quality work. The placebo effect is related to the impact of a non - active treatment in experiments. A scientific journal is a platform for publication, but it's the peer - review process within it that ensures quality.

Answer:

D. Peer review