A scientific law is a statement that a) we postulate to be true b) is generally observed to be true c) is a summary of experimental observation d) is agreed upon by the scientific community

A scientific law is a statement based on repeated experimental observations that describes some aspect of the natural world. It is an established principle that explains the consistent behavior of natural phenomena and is generally accepted by the scientific community. Now we review the options given: a) we postulate to be true: Postulate means to assume without proof. Scientific laws are established based on experimental observations, so this option is not correct. b) is generally observed to be true: Scientific laws are derived from consistent observations that hold true in various situations. This option is likely correct. c) is a summary of experimental observation: Scientific laws are based on experimental observations, but they are not mere summaries. They explain consistent behavior and provide principles for making predictions. Therefore, this option is not entirely accurate. d) is agreed upon by the scientific community: While scientific laws are generally accepted by the scientific community, this statement alone does not sufficiently describe what a scientific law is.

Based on the understanding of a scientific law and the analysis of each option, the correct answer is: b) is generally observed to be true