Respuesta :
The study of chemicals is called chemistry.
The correct answer is A, B, and D.
What is a controlled experiment?
- A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable.
- This increases the reliability of the results, often through a comparison between control measurements and the other measurements.
According to the question, the option which must be essential to complete the controlled experiment is Option A, B, and D that is as follows:-
- Two identical bicycle tires
- One bicycle tire kept at a constant temperature
- Different amounts of air in each tire
Hence, we can conclude that these options are essentials.
For more information about the controlled experiment, refer to the link:-
https://brainly.com/question/11480093