Final answer:
Daria is incorrect. Real numbers are a subset of complex numbers, but not all real numbers are complex.
Step-by-step explanation:
No, Daria is incorrect. Every real number is not a complex number. Real numbers are a subset of complex numbers, but not all real numbers are complex. Complex numbers consist of a real part and an imaginary part, while real numbers only have a real part. For example, the number 3 is a real number but not a complex number because it does not have an imaginary part.
On the other hand, the number 3 + 4i is a complex number because it has both a real part (3) and an imaginary part (4i). Therefore, while real numbers are a part of complex numbers, not all real numbers can be considered complex numbers.