The structure which is highlighted is referred to as thyroid gland and is therefore denoted as option B.
This is referred to an endocrine gland which is located in the neck region and secretes hormones which include the following below:
The thyroid gland is located below the larynx and in front of the trachea in the neck region and are important in growth and metabolism in the body system. Iodine is the element which is regarded as the major substrate in the thyroid gland hormone synthesis and deficiency causes goitre which is characterized by the swelling of the neck which is the region where the gland is found.
This is therefore the reason why thyroid gland was chosen as the most appropriate choice.
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