Let's analyze each item in List I and the correct match in List II.

Nucleolus (A) is primarily known as the site where ribosomal RNA (rRNA) is synthesized and where initial ribosome assembly occurs. Thus, it matches perfectly with III. Site of active ribosomal RNA synthesis.

Centriole (B) is a cylindrical cellular structure composed of microtubules and is best known for its role in facilitating cell division, especially in the formation of the spindle apparatus. Its structure is often described as being like a cartwheel, which makes it accurately matched with II. Organization like the cartwheel.

Leucoplasts (C) are a type of non-pigmented plastid found in plant cells, primarily involved in the storage of important nutrients such as starch, oils, and proteins. Hence, the appropriate pair is IV. For storing nutrients.

Golgi apparatus (D) functions in the sorting, modifying, and packaging of macromolecules for cell secretion or for use within the cell. It includes the synthesis of glycolipids among its activities. Consequently, the correct match is I. Site of formation of glycolipid.

With these correlations, the correct matches are:

• A - III,
• B - II,
• C - IV,
• D - I

Therefore, the correct option is Option A:

$$\text{A-III, B-II, C-IV, D-I}$$.