If in a research independent variables cannot be manipulated then it is known as

Experimental research
Non-experimental research
Pure or fundamental research
Exploratory research

The correct answer is: B. Non-experimental research

Non-experimental research is a type of research in which the researcher does not manipulate the independent variable. This means that the researcher cannot control the conditions under which the study is conducted, and cannot assign participants to different groups. As a result, non-experimental research is often less reliable than experimental research.

There are two main types of non-experimental research: observational research and correlational research. Observational research involves observing participants in their natural environment, without trying to influence their behavior. Correlational research involves measuring the relationship between two or more variables, without trying to determine which variable causes the other.

Non-experimental research can be useful for exploring relationships between variables, but it cannot be used to determine cause and effect.

Here is a brief explanation of each option:

  • Experimental research is a type of research in which the researcher manipulates the independent variable and controls the conditions under which the study is conducted. This allows the researcher to determine cause and effect.
  • Pure or fundamental research is a type of research that is conducted to advance knowledge, without any specific application in mind.
  • Exploratory research is a type of research that is conducted to gain a better understanding of a problem or issue. It is often used to generate hypotheses for further research.