What is the number of tarsal bones in the human hind limb?

The figure below shows the right pelvic girdle and the bones of the hind limb. Identify the bones labeled $P, Q,$ and $R$.

Which bone has two curvatures?

Choose the correct option $:-$
$(a)$ First seven pairs of ribs are called true ribs.
$(b)$ Sternum is a large triangular bone that is situated at the ventral part of the thorax.
$(c)$ Scapula has a slightly elevated ridge called the spine which projects as a flat,expanded process called the acromion.
$(d)$ Below the acromion is a depression called the glenoid cavity which articulates with the head of the humerus.

Match the following columns:

Column-$I$ (Bone region)	Column-$II$ (Number of bones)
$P$. Thigh	$I$. $7$
$Q$. Shank	$II$. $14$
$R$. Knee cap	$III$. $1$ (Long bone)
$S$. Ankle	$IV$. $2$
$T$. Metatarsals	$V$. $1$ (Cup-shaped)
$U$. Phalanges	$VI$. $5$

Patella is associated with