Itachi Uchiha doesn't have the eternal Mangekyou Sharingan because he chose not to take the eyes of his brother, Sasuke, to achieve it. Itachi was aware of the consequences of obtaining the eternal Mangekyou Sharingan, such as the loss of vision and the toll it takes on the user's body. Additionally, Itachi had already accepted his fate and was prepared to die, so he did not seek to prolong his life by obtaining the eternal Mangekyou Sharingan. **

Itachi Uchiha does not have the Eternal Mangekyou Sharingan because he chose to transplant his Mangekyou Sharingan to his younger brother, Sasuke, before his death. By giving his eyes to Sasuke, Itachi ensured that his brother would gain the Eternal Mangekyou Sharingan and achieve greater power. Itachi's sacrifice and selflessness in giving up his eyes for Sasuke's benefit further highlight his complex character and deep love for his brother. **

Yes, women from the Uchiha clan can also possess the Sharingan. The Sharingan is a genetic trait that is passed down within the Uchiha clan, so both men and women have the potential to awaken it. It is a powerful dojutsu that grants the user enhanced perception and the ability to see chakra, and it is not limited by gender within the Uchiha clan. **

Yes, it is possible for Sarada Uchiha to have the Mangekyou Sharingan. In the Naruto series, it is shown that the Mangekyou Sharingan can be awakened through experiencing intense emotional trauma or loss. Since Sarada is an Uchiha and has the potential to awaken the Sharingan, it is within the realm of possibility for her to eventually unlock the Mangekyou Sharingan through such experiences. However, whether or not she will actually awaken it in the series is yet to be seen. **

No, Kakashi cannot switch between the normal eye and the Sharingan like an Uchiha. The Sharingan is a special eye ability that is unique to the Uchiha clan, and Kakashi obtained his Sharingan through a transplant from his deceased friend Obito Uchiha. As a result, Kakashi cannot switch between the normal eye and the Sharingan at will, and he typically keeps his Sharingan eye covered with a headband to conserve its chakra. **

Kakashi awakened his Mangekyou Sharingan through the trauma of losing his friend Obito during a mission. This intense emotional experience triggered the awakening of his Mangekyou Sharingan, despite not being an Uchiha. It is a rare occurrence for a non-Uchiha to awaken the Mangekyou Sharingan, but in Kakashi's case, the emotional trauma and bond with Obito were strong enough to unlock this powerful ability. **

The Rinnegan is considered stronger than the Sharingan. The Rinnegan is known as the most powerful of the three great dojutsu and grants the user a wide range of abilities, including the power to control all six paths of Pain. It also allows the user to master all five basic nature transformations and possess the ability to use the Six Paths Technique. In contrast, the Sharingan, while powerful in its own right, does not have the same level of versatility and abilities as the Rinnegan. **

The Rinnegan is considered to be stronger than the Sharingan. The Rinnegan is known as the most powerful of the three great dojutsu and grants the user a wide range of abilities, such as the ability to control all six paths of Pain, manipulate gravity, and even revive the dead. In contrast, the Sharingan, while powerful in its own right, has limitations in terms of its abilities and scope of power. Overall, the Rinnegan's versatility and range of abilities make it a more formidable dojutsu compared to the Sharingan. **