Identify the odd one out:

In humans,the knob-like projection of the second cervical vertebra helps in the rotational movement of the head. What is it called?

Sella turcica is found in which bone?

Statement-$I$: Each rib is a thin flat bone connected dorsally to the vertebral column and ventrally to the sternum.
Statement-$II$: The $8^{th}$,$9^{th}$,and $10^{th}$ pairs of ribs do not articulate directly with the sternum but join the seventh rib with the help of hyaline cartilage. These are called floating ribs.

The vertebrarterial canal (foramen transversarium) is present in the vertebrae that are:

In the first two or three lumbar vertebrae,there is a small median process below the centrum; this is called: