Question

The common brown rat is
A. Rattus rattus
B. Rattus meltada
C. Rattus norvegicus
D. Bandicota bengalensis

Answer 1

Hint:
The brown rat, also known as the common rat, as street rat is a widespread species of common rat.
Brown rats have the ability of acute hearing and are sensitive to ultrasound, and also possess a very highly developed olfactory sense.

Complete answer:
The rats are medium-sized rodents belonging to the family called 'Muroidea' and the genus is 'Rattus'.
The black rat is called Rattus rattus.
The soft-furred rat is known as Rattus meltada.
The Indian mole rat is called ‘Bandicota bengalensis’.
The brown rat is known as Rattus norvegicus.
The brown rat has grey-brown fur, a pointed nose, large, bare ears and a long scaly tail.
This species is much bigger than any of the mouse species.

Therefore, the correct answer is option C.

Additional Information:

Rattus rattus- It is a common long-tailed rodent of the stereotypical rat genus Rattus, in the subfamily Murinae.
 It likely originated in the Indian subcontinent, but is now found worldwide.
This is also known as the ship rat, roof rat, or the house rat.

Rattus meltada- This is a species of rodent in the family Muridae native to central Asia.
Rattus meltada is a soft furred rat.

Rattus norvegicus- They are originally native to northern china.
They are also known as the brown rats.

Bandicota bengalensis- They have the shaggy, blackish brown body, not including the haired tail of about the same length.
The greater bandicota bengalensis rats are found in the Indian subcontinent.

Note:

The brown rats are now found on every continent except Antarctica.
Originally, this species lived primarily in the forests, but has since developed as a communal species with humans, preferring to live almost anywhere the humans are present.
Brown Rats carry many nasty diseases which they can spread to the human being, mostly through their urine. They spread diseases like Leptospirosis, Salmonella disease, Listeria disease and Hantavirus. Brown Rats are able to inflict a great amount of structural damage.