Which of the following is classified as a benign neoplasm of muscle?

Leiomyoma is indeed classified as a benign neoplasm of muscle. This type of tumor specifically arises from smooth muscle cells and is most commonly found in the uterus, where it is often referred to as a uterine fibroid. The benign nature of leiomyomas means that they typically grow slowly and do not spread to other parts of the body, which is characteristic of benign tumors.

In contrast, angiomas are benign tumors of blood vessels, while chondromas originate from cartilage tissue and adenomas arise from glandular epithelial tissue. Each of these has distinct characteristics and tissue origins that differentiate them from leiomyomas. Thus, among the options provided, leiomyoma is the only tumor that directly relates to muscle tissue, affirming its classification as a benign neoplasm of muscle.