Avoiding bias, increases reliability and is important to experimental data. A scientist is investigating the cause of contamination of well water at a specific location. Four residents of the location responded to questions asked by the scientist. The chart below shows their responses. Questions Resident 1's answer Resident 2's answer Resident 3's answer Resident 4's answer Do you work at the gas station near the well? No Yes No Yes Does anyone in your family work at the gas station? No No Yes Yes Have you observed any change in the quality of well water? Yes No Yes Yes Which of these residents is most likely to provide reliable information? Resident 1 Resident 2 Resident 3 Resident 4