Final answer:
The correct way to present scientific results given the possibility of uncertainty is cautiously. Measurements such as the number of seconds in an hour and the number of pages in a book can be exactly determined, while the number of grams in a person's weight is subject to some degree of uncertainty.
Step-by-step explanation:
The question addresses the concept of uncertainty in presenting scientific results, which is a pertinent issue in the field of science. When dealing with uncertainty, the correct answer is that you can cautiously present results as definitive; no study is the final word. This refers to the recognition that scientific findings are always subject to revision based on new evidence or analyses.
When considering whether certain measurements can be determined exactly or with uncertainty:
- (a) The number of seconds in an hour can be exactly determined because time is defined with specific units.
- (b) The number of pages in a book can be exactly determined by counting them.
- (c) The number of grams in your weight must be measured with some degree of uncertainty because personal weight can fluctuate and scales have varying levels of precision.
- (d) The number of grams in 3 kilograms can be exactly determined as 1 kilogram is defined as 1000 grams, thus 3 kilograms equals 3000 grams exactly.