Question

what happens when several experiments with new information or new technology produce results that challenge an existing theory?
the theory is considered proven.
the theory becomes a law.
the evidence is ignored and thrown away.
the theory is revised or updated.

Explanation:

In science, new evidence can prompt theory - revision. When experiments challenge an existing theory, it's updated to incorporate new data, not proven, made into a law, or have evidence ignored.

Answer:

D. The theory is revised or updated.