Discuss your method of collection for the values that you are using in your stud

Discuss your method of collection for the values that you are using in your study (systematic, convenience, cluster, stratified, simple random).
What are some faults with this type of data collection?
What other types of data collection could you have used, and how might this have affected your study?

I used a convenience sampling method approach to find the participants for my study. I measured my family member height and called some of my friends and relatives.