The accuracy of the research process depends upon

Accuracy of research depends on all three factors acting together, so All of the above holds.

An unbiased attitude of the researcher keeps interpretation free of prejudice.

A suitable sample size gives the findings adequate representativeness and power.

The research method adopted shapes how validly the data are gathered and analysed.

Each single factor alone cannot secure accuracy, they reinforce one another.

Control over extraneous variables further sharpens the accuracy of the process.