Question

science is the effort to understand the natural world and how the natural world works. science uses______ as the basis of understanding how the natural world works.
a supernatural evidence
b observable physical evidence
c only past knowledge
d only lab experiments

Explanation:

Science is based on observable physical evidence. Supernatural evidence (A) is not part of scientific methodology. Science doesn't rely only on past knowledge (C) as it's constantly evolving with new evidence. Lab experiments (D) are one method, but observation in nature also provides evidence. Observable physical evidence (B) is fundamental as it can be tested, verified, and forms the basis for scientific theories and understanding of the natural world.

Answer:

B. observable physical evidence