Step 1: Understanding peritoneal folds.
The female reproductive organs are supported and held in position by folds of peritoneum known as mesenteries.
Step 2: Role of mesometrium.
The mesometrium is the part of the broad ligament that connects the uterus to the pelvic body wall and provides support and blood supply.
Step 3: Eliminating other options.
Perimetrium is the outer muscular layer of the uterus.
Mesosalpinx supports the fallopian tubes.
Myometrium is the muscular middle layer of the uterine wall.
Step 4: Conclusion.
Hence, the uterus is attached to the body wall by the mesometrium.