The number of students who scored at least 8 in a quiz means,the total number of students that scored 8 marks and above
The number of students that scored 8 marks from the dot plots is
[tex]=6[/tex]
The number of students that scored 9 marks from the dot plot is
[tex]=3[/tex]
The number of students that scored 10 marks from the dot plot is
[tex]=2[/tex]
Therefore,
The number of students who scored at least 8 in a quiz will be
[tex]\begin{gathered} =6+3+2 \\ =11 \end{gathered}[/tex]
Hence,
The final answer is OPTION C
