Answer:
C-I can go to the concert.
Explanation:
The law of detachment states that if
"If p, then q." and "P." are true statements, then
"Q." is true.
In this case, p is "I can afford to buy a ticket" and q is "I can go to the concert."
We are told that "If p, then q." is true.
We are also told that p is true, "I can afford to buy a ticket."
This means q must be true, "I can go to the concert."