Please help me find the correct answer for the ones that have an red x

Sampling and Collection Methods Instructions: Choose the best method for choosing a sample and the best method to collect data. Remember to think about the definitions and the pros and cons of each before choosing your answers. 1. A researcher is trying to determine the migratory patterns of Great White sharks. They will tag and track sharks they are able to catch. Census or Sampling method: Cluster sampling Collection method: Observational study * 2. There are 30 students in your class and you want to know their birthdays. Census or Sampling method: Convenience sampling Collection method: Observational study * x 3. A company wants to examine their products for paint defects. They cannot examine every product, but they want each item to have an equal chance of being selected. Census or Sampling method: Simple random sampling Collection method: Experiment