Witch source should be avoided when conducting scientific research

When performing scientific research, one must always avoid using personal biases so that there are no errors or interruptions. Hope this helps you.

personal biases so that there are no errors or interruptions

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this