The right option is; science
Though powerful, science can't make moral judgements for us. ultimately, individuals must make moral judgements about what's right, wrong, good, or bad.
Science is a particular discipline or branch of learning that is involved with measurable or systematic principles rather than intuition or natural ability. Science is not concerned with the principles of right and wrong behavior and it cannot make moral judgment. Individuals that studies science (scientists) make and record observations of nature in other to have more knowledge about how nature works.