GCSE Maths Practice: sampling

\( \begin{array}{l}\text{A survey was conducted in group 10 of 20 students.} \\ \text{A random sample of 5 students was selected.} \\ \text{What type of sampling is this?}\end{array} \)

Choose one option:

\( \text{Stratified Sampling} \) \( \text{Systematic Sampling} \) \( \text{Random Sampling} \)