Question

long - term effects of eating fast food involve several ______ diseases.
cancer
acute
genetic
chronic

Explanation:

• "Cancer" is a specific type of disease, not a general category that fits the context of "long - term effects" in a broad sense for this sentence structure.
• "Acute" means sudden and short - term, which is the opposite of "long - term".
• "Genetic" refers to diseases caused by genes, and there is no indication in the sentence that the long - term effects of fast food are genetic.
• "Chronic" means long - lasting or persistent, which matches the "long - term effects" described in the sentence.

Answer:

chronic