The correct answer is option 'A' - there are two arches present in the foot of a human being. These arches are commonly referred to as the longitudinal arches and they play a crucial role in providing stability and flexibility to the foot.

The foot is a complex structure that consists of bones, ligaments, tendons, and muscles. It is designed to support the weight of the body and absorb the impact of walking, running, and jumping. The arches of the foot help distribute the body's weight evenly across the foot and act as shock absorbers.

There are two main arches in the foot:

1. Medial Longitudinal Arch: This is the primary arch of the foot and runs along the inner edge of the foot. It is composed of the calcaneus (heel bone), talus (ankle bone), navicular bone, and the three cuneiform bones. This arch is higher than the lateral longitudinal arch and helps in maintaining balance and stability.

2. Lateral Longitudinal Arch: This arch runs along the outer edge of the foot. It is composed of the calcaneus, cuboid bone, and the fifth metatarsal bone. The lateral longitudinal arch is flatter and less prominent than the medial longitudinal arch.

These arches are supported and maintained by various ligaments, tendons, and muscles. The plantar fascia, a thick band of connective tissue, also plays a crucial role in supporting the arches and preventing them from collapsing.

The arches of the foot are dynamic structures that can adapt to different types of surfaces and movements. They help in shock absorption, weight distribution, and maintaining the normal alignment of the foot and ankle. When the arches are not properly supported or if there is an abnormality in their structure, it can lead to foot problems such as flat feet or high arches.

In conclusion, the foot of a human being has two arches - the medial longitudinal arch and the lateral longitudinal arch. These arches are important for maintaining balance, stability, and absorbing shock during various activities.