Answer: D. Ilio inguinal nerve

Explanation:
Deep inguinal ring:
The deep (internal) inguinal ring is the beginning of the inguinal canal and is at a point midway between the anterior superior iliac spine and the pubic symphysis. It is just above the inguinal ligament and immediately lateral to the inferior epigastric vessels.

It is the beginning of the tubular evagination of transversalis fascia that forms one of the coverings (the internal spermatic fascia) of the spermatic cord in men or the round ligament of the uterus in women.

Reference: Gray’s Basic Anatomy By Richard Drake, A. Wayne Vogl, Adam W. M. Mitchell, 2012, Page 144.

Answer: D. Lacunar ligament

Explanation: A femoral hernia exits the abdominal cavity through the femoral ring to enter the femoral canal. The femoral ring is bounded medially by the lacunar ligament. Compression of the herniated intestine against the sharp edge of the lacunar ligament may cause strangulation of the intestine. The other borders of the femoral ring are the inguinal ligament anteriorly, the pubis posteriorly, and the femoral vein laterally.

The femoral artery is within the femoral sheath along with the femoral hernia, but is lateral to the femoral vein, which separates the artery from the hernia.

The femoral nerve is not inside of the femoral sheath, but is lateral to the sheath.

The femoral vein is lateral to the femoral canal within the femoral sheath.

Reference: Deveney K.E. (2010). Chapter 32. Hernias & Other Lesions of the Abdominal Wall. In G.M. Doherty (Ed), CURRENT Diagnosis & Treatment: Surgery, 13e.​