Which of the following statements is correct? 1. all of these 2. a laboratory experiment uses the experimental method and a field experiment uses the nonexperimental method. 3. the laboratory experiment allows greater control of extraneous variables than the field experiment. 4. the independent variable is manipulated in the laboratory experiment and measured in the field experiment.

3. The laboratory experiment allows greater control of extraneous variables than the field experiment.

Explanation:

A laboratory experiment is conducted under highly controlled conditions where accurate measurements are possible, Field experiments in the other hand are done in the participants everyday environment, so extraneous variables are not really in control.  

This difference allows the laboratory experiment to have a greater control of extraneous variables since it is conducted in a controlled enviroment tipically decided by the researcher.  

Incorrect:

1.- 2 and 3 are wrong

2.- Both of them follow the experimental method  

4.- Field experiments are not necessarily done to measure variables done in laboratory experiments.

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