Quantitative research (Validity and Reliability)

Presume that you are considered an expert in the area of survey construction and administration.

- What would you tell a young, aspiring professional about the construction process of a survey that would ensure a valid, reliable assessment instrument?

- What would you tell him or her about selecting a target group for the administration of the survey, as well as an administrative procedure to maximize the consistency of the survey?

I want a paraphrase and 600 Words