Which of the Following Sample Selection Techniques Can Be Used

Short Answer

Which of the following sample selection techniques can be used with statistical sampling applications? $$\begin{array} { l c c } & \text { Blach selection } & \text { Haphazar selection } \\\text { A } & \mathrm { Yet } & \mathrm { Na } \\\mathrm { B } . & \mathrm { Yet } & \mathrm { Yet } \\\text { C. } & \mathrm { Na } & \mathrm { Yes } \\\text { D. } & \mathrm { Na } & \mathrm { Na }\end{array}$$