PLZ HELP!!!!

Meteorologists want to design a system of instruments that will evaluate ocean currents, air temperatures, and wind speed in order to predict catastrophic weather such as hurricanes and cyclones.

What should they do before producing their first working system of instruments?

collect data

modify their design

evaluate the result of their system

build a prototype

Collect data-This should be the first step in coming up with a design of an instrument to measure a certain property. The data should comprise of the air temperatures, the wind speed values and recorded peak times for the ocean currents.

Build a prototype-This is sample equipment built from the data obtained to be used as a test instrument in predicting the catastrophic weather .The prototype is a mini design of the actual design.

Evaluate the result of their system-The results obtained from the prototype can be used for evaluation to determine the working of the designed devise. The results produced should show a connection that can be used to predict the weather according the values of temperature, wind speed and ocean current values.

Modify their design-After analyzing the results according to the parameters set for the design, the prototype can be improved to obtain a final design which will indeed produce the required results.