Answer:
(1)
Accepted theories may be modified or overturned as new evidence and perspective emerges. Scientists are likely to accept a new or modified theory if it explains everything the old theory did and more.
which is c
(2)
Bias is a disproportionate weight in favor of or against an idea or thing, usually in a way that is closed-minded, prejudicial, or unfair. Biases can be innate or learned. People may develop biases for or against an individual, a group, or a belief. In science and engineering, a bias is a systematic error. Wikipedia
which is c
(3)
a balance achieved between two desirable but incompatible features; a compromise.
"a trade-off between objectivity and relevance"
which is d or c
(4)
D. testable
