please help i'm not sure if these are the correct answers

Question 8 3 pts D 1 0 Details Identify the sampling technique in the scenarios below. a. A Red Cross Member is trying to assess the needs of those still in Houston after Hurricane Harvey. Getting places is difficult though, so he wants to minimize travelling. To do so, the member splits the city into 10 zones and completely surveys 2 randomly selected zones. O Cluster Sampling O Systematic Sampling O Convenience Sampling O Stratified Sampling Simple Random Sampling b. A Frontier representative wants to know how satisfied people in a neighborhood are with their internet service. To find out, he tries to survey people at every 3rd house in the neighborhood. O Cluster Sampling Systematic Sampling O Convenience Sampling Stratified Sampling Simple Random Sampling