The most abundant tissue in the body is

A

Nervous

B

Muscular

C

Vascular

D

Epithelial

Skeletal muscle is the most abundant of the human body's tissue. It consists of thread-like cells, of which the longest can be up to 30cm long and 0.15mm thick, that are bound together into strands by collagen filaments. So, the muscular tissue is abundant as it has around 700 muscles, which constitutes around 40% of total body weight.
So, the correct answer is option B.