Answer:
There is an error, which is the following one:
A. makes it.
Step-by-step explanation:
The sentence starts out like this:
"The texture and the delicacy of the soufflé makes it..."
The subject of the sentence is "the texture and the delicacy of the soufflé", which is in third-person plural, not singular. Therefore, it is incorrect to use the verb as "makes it", as if it were in third-person singular. Check it out:
"The texture and the delicacy of the soufflé makes it..."
↓ ↓
They incorrect (third-person singular)
Now, the correct version:
"The texture and the delicacy of the soufflé make it..."
↓ ↓
They correct (third-person plural)
The final version:
"The texture and the delicacy of the soufflé make it one of the most delightful treats in French cuisine."