Question

correct the text by inserting two commas. it turns out that the mexican delicacy known as huitlacoche is much to my surprise a fungus that infects corn.

Explanation:

The phrase "much to my surprise" is a parenthetical interrupter that adds extra context, so it needs to be set off by two commas to separate it from the main clause of the sentence.

Answer:

It turns out that the Mexican delicacy known as huitlacoche is, much to my surprise, a fungus that infects corn.