The most common livestock animal in Meghalaya is:

Cow
Goat
Pig
Chicken

The correct answer is: b) Goat.

Goats are the most common livestock animal in Meghalaya. They are raised for their meat, milk, and hides. Goats are well-adapted to the mountainous terrain of Meghalaya and can thrive on a variety of food sources. They are also relatively easy to care for, which makes them a popular choice for farmers in the region.

Cows are also raised in Meghalaya, but they are not as common as goats. Cows are primarily raised for their milk, which is used to make a variety of dairy products, including cheese, yogurt, and butter. Cows are also used as draft animals, and their manure is used as fertilizer.

Pigs are not as common as goats or cows in Meghalaya. They are primarily raised for their meat, which is used to make a variety of dishes, including pork chops, ham, and bacon. Pigs are also used as scavengers, and their manure is used as fertilizer.

Chickens are the most common poultry animal in Meghalaya. They are raised for their meat and eggs. Chickens are relatively easy to care for and can thrive on a variety of food sources. They are also a popular choice for farmers in the region because they can be raised in small spaces.