**Core Concept**
Iodine is an essential micronutrient required for the synthesis of thyroid hormones, which play a critical role in regulating metabolism, growth, and development. The daily iodine requirement varies based on factors such as age, sex, and physiological status.

**Why the Correct Answer is Right**
The recommended daily intake of iodine for an adult person is 150 mcg. This is because iodine is necessary for the production of thyroid hormones, specifically triiodothyronine (T3) and thyroxine (T4), which are produced by the thyroid gland. Iodine is a critical component of these hormones, and its deficiency can lead to hypothyroidism and other related disorders. The thyroid gland absorbs iodine from the bloodstream and incorporates it into the thyroid hormones, which are then released into the circulation to regulate various bodily functions.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it is lower than the recommended daily intake of iodine for an adult person.
**Option B:** This option is incorrect as it is higher than the recommended daily intake of iodine for an adult person, and excessive iodine intake can lead to iodine toxicity.
**Option C:** This option is incorrect as it is not the recommended daily intake of iodine for an adult person.

**Clinical Pearl / High-Yield Fact**
Iodine deficiency is a significant public health concern worldwide, particularly in areas where iodized salt is not readily available. It can lead to cretinism, a condition characterized by growth retardation, developmental delays, and intellectual disability.

**Correct Answer: C. 150 mcg.**