Jean Luc and Oscar own a small manufacturing company in Louisiana, and they are meeting with two executives of a Mexican retail chain in the hopes of convincing them to carry their products. Jean Luc begins the pitch, and after a couple of minutes, Oscar jumps in to say, "Jean Luc really hit the nail on the head when he said these products offer better value than what you're currently carrying." The Mexican executives both speak English, but they look at each other in confusion. What mistake did Oscar make?

He used a Colloquialism

Explanation:

Jean Luc and Oscar own a small manufacturing company in Louisiana, and they are meeting with two executives of a Mexican retail chain in the hopes of convincing them to carry their products. Jean Luc begins the pitch, and after a couple of minutes, Oscar jumps in to say, "Jean Luc really hit the nail on the head when he said these products offer better value than what you're currently carrying." The Mexican executives both speak English, but they look at each other in confusion. The mistake Oscar made was that he used a colloquialism.

Colloquialism or colloquial language is the linguistic style used for casual communication

In literature, colloquialism is the use of informal words, phrases, or even slang in a piece of writing