Can someone pls help me with this I really need it :/

Step-by-step explanation:
√7 + √7 = 2√7 (irrational)
√7 + (-√7) = 0 (rational)
√7 + 0 = √7 (irrational)
√7 + 7 = 7 + √7 (irrational)
The answer is the 2nd option / -√7.
Answer: The answer is the 2nd option / -√7.
Step-by-step explanation: