Answer:
A scientist is most likely to use a simulation in a controlled experiment in order to observe a 1000-year process in one day.
Step-by-step explanation:
In scientific observation, its carried out in the control environment so as to minimise the effects of the variables besides those independent variable, which also helps in increasing the accuracy of the results. also frequently through comparison between those control environment and other measurements. Through this process data of 1000 years can be studied in very short period of time. And also getting the accurate details. This is also known to be doing multiple experiments at certain period of time.