Toxic agents present in food which interfere with thyoxine synthesis lead to the devlopment of:
toxic goitre
cretinism
simple goitre
thyrotoxicosis
Thyroid glands are responsible for the production of thyroxine. If there are toxic agents in the food it affects the synthesis of thyroxine as it leads to swelling of the neck. This medical condition is termed a simple goiter.
Hence, the correct option is simple goiter.