Which of the following bones are the longest in the body?
(a) Two fibulas
(b) Two femurs
(c) Two tibias
(d) Two ulnas

Options

A. Two fibulas
B. Two femurs
C. Two tibias
D. Two ulnas

Explanation

To determine which of the following bones are the longest in the body, we will analyze each option provided:

1. **Option (a): Two fibulas**
- The fibula is a long, thin bone located on the lateral side of the tibia in the lower leg. However, it is not the longest bone in the body.

2. **Option (b): Two femurs**
- The femur, also known as the thigh bone, is the longest and strongest bone in the human body. It extends from the hip to the knee and is crucial for supporting the weight of the body and allowing movement.

3. **Option (c): Two tibias**
- The tibia, or shinbone, is larger and stronger than the fibula but is still not as long as the femur.

4. **Option (d): Two ulnas**
- The ulna is one of the two bones in the forearm. It is shorter than the femur, tibia, and fibula.

After evaluating all the options, we conclude that the longest bones in the body are the femurs.

**Final Answer: (b) Two femurs**