Which of the following best describes the way that scientists make observations a. record only the observations that support the hypothesis b. rely on the sense of sight c. scientists can change their observations after an experiment is over d. use tools to improve their senses when they make observations

D. Use tools to help improve their senses when they make observations.

Observation is the outcome of a scientific procedure, which is followed to answer the questions related to a scientific inquiry. In order to make observation scientists need to use tools that can help in improving their senses like visual, sensation and hearing aids, so as to make observation accurate, and conclusive in a research.