For this case, we have that by definition, an irrational number is a number that can not be expressed as a fraction[tex]\frac {a} {b}[/tex], where a and b are integers and b is different from zero.
So, we have the irrational numbers are:
[tex]\sqrt {80} = 8.94427190999915\\\pi = 3.1415926535897932384\\\sqrt {12} = 3.46410161513775[/tex]
Answer:
Option B, D and E
