Economy, asked by aarzoomotwani337, 8 months ago

________________method of investigation is suitable only when the respondents are educated

Direct personal investigation

Indirect oral investigation

Telephone interviews

Mailing questionnaire

​

Answers

Answered by singlachesta02
0

Answer:

Mailing Questionnaire

Explanation:

Questionnaire is prepared and investigation is done only when the respondents are educated.

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