Introduction:
Bhakti movement was a spiritual and religious movement that emerged in medieval India. It emphasized personal devotion and love towards a supreme being. The Bhakti saints were divided into two branches: Saguna Bhakti (worship of a personal deity with form and attributes) and Nirguna Bhakti (worship of a formless and attributeless divine). In this context, the question asks us to identify the Bhakti saint who does not belong to the Nirguna branch of Bhakti saints.

Explanation:
- Tulsidas: Tulsidas was a 16th-century saint and poet who composed the epic Ramcharitmanas, a retelling of the Ramayana in the vernacular language. He is considered one of the most prominent Bhakti saints in the Saguna Bhakti tradition. Tulsidas worshipped Lord Rama as a personal deity with form and attributes. Therefore, he does not belong to the Nirguna branch of Bhakti saints.
- Dadu Dayal: Dadu Dayal was a 16th-century saint and poet from Rajasthan. He preached the philosophy of Nirguna Bhakti, emphasizing devotion to a formless and attributeless divine. Dadu Dayal's teachings reject the importance of external rituals and focus on inner spiritual experiences. Therefore, Dadu Dayal belongs to the Nirguna branch of Bhakti saints.
- Kabir: Kabir was a 15th-century saint and poet who played a significant role in the Bhakti movement. He advocated for the unity of all religions and emphasized the worship of a formless divine. Kabir's poetry often criticized religious rituals and rituals associated with idol worship. Therefore, Kabir belongs to the Nirguna branch of Bhakti saints.
- Guru Nanak: Guru Nanak was the founder of Sikhism and a prominent figure in the Bhakti movement. He preached the concept of One God and rejected idol worship. Guru Nanak emphasized the importance of devotion to a formless divine and the unity of all religions. Therefore, Guru Nanak belongs to the Nirguna branch of Bhakti saints.

Conclusion:
Among the given options, Tulsidas is the Bhakti saint who does not belong to the Nirguna branch of Bhakti saints. Tulsidas worshipped Lord Rama as a personal deity with form and attributes, which aligns him with the Saguna Bhakti tradition. The other saints mentioned in the options - Dadu Dayal, Kabir, and Guru Nanak - all belong to the Nirguna branch of Bhakti saints as they emphasized devotion to a formless and attributeless divine.