What would a meteorologist most likely use to collect data in the field? 

A)  ethyl alcohol 
B)  a radioactive isotope 
C)  an aircraft 
D)  a computer model

A meteorologist would most likely use an aircraft to collect data in the field, such as gathering atmospheric measurements or studying storm patterns. Ethyl alcohol and radioactive isotopes are not commonly used in meteorology, and computer models are typically used to analyze and interpret data rather than collect it in the field.