You are presented with the question "Scientists study animal behavior through which of the following?" and the following answer choices: 
- audio and video tape
 - Electrical energy
 - irradiation
 - A computer
 - raising their temperature
 - Something coming from a gland
 - The bending of a ray of light
 - characteristics

Now knowing that ethologists usually study how animals behave in their natural environment and many ethologists capture their observations on videotape or audio tape, choose the best answer.


 

 audio and video tape        