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Hughes knew that the meat from a single cow couldn’t make very many people sick. The real danger was if the disease was passed to other cows.

How could that happen? After cows are slaughtered, the parts you can eat go to meat processing plants to be made into hamburger and steaks. The parts you can’t eat—like the bones and hooves—are often sent to factories that grind them into meal for animal feed.

The signal word that points to the problem in the passage is

"if."
"how."
"after."
"like."

Respuesta :

After reading the passage we can identify that the problem would be that the disease passed to other cows, this issue is expose after this sentence “The real danger was if” here, the signal word that points the problem is “if”, here is were we as reader receive the alert.

Answer:

"if" is the correct answer::))

Explanation: