Concept:Harvest festival:After three or four months of hard work there comes the day of the harvest.The sight of golden fields of standing crops, laden with grain, fills the hearts of farmers with joy and a sense of well-being.The efforts of the past season have borne fruit and it is time to relax and enjoy a little.The period of harvest is, thus, of great joy and happiness in all parts of India.Men and women celebrate it with great enthusiasm.Special festivals associated with the harvest season are Pongal, Baisakhi, Holi, Diwali, Nabanya and Bihu.Explanation:Til Sankranti- Uttar Pradesh, Bihar and Madhya Pradesh:Makar Sankranti or til Shankranti is India's oldest and most colourful harvest festival, which is observed throughout the country.This festival is known as til Shankranti in the state of Uttar Pradesh, Bihar and Madhya Pradesh.Makar Sankranti commemorates the sun's passage through the zodiac sign of Makara (Capricorn) as it passes through the heavens.Gudipadwa-Maharastra:Gudi Padwa is a major event in Maharashtra that celebrates the beginning of a prosperous New Year.Gudi Padwa is also known as the harvest festival, as it marks the end of the rabi agricultural season.At the entrance of their homes, they make rangoli designs and decorate them with flowers and a homemade doll.Gudi (bamboo dolls) are made from mango and neem leaves and hung at the entrance.Bihu-Assam:The entire state of Assam celebrates Bohag Bihu with fervour and excitement every year in April.It marks the start of the Assamese calendar year.This harvest festival in India is also known as Magh Bihu.Farmers in Assam rejoice and reap the results of their harvesting labour. The mejis, or clay and hay pavilions, are burned on Bihu.The Brahmaputra River is said to be as old as Bihu.Nabanna-West Bengal:Nobanno (Bengali: New Feast) is a Bengali harvest festival celebrated in the Indian states of West Bengal, and Tripura.This festival brings joy, and happiness with food, dance, and music.It is a gastronomic festival, with numerous native Bengali dishes such as Pitha being prepared.Thus, Harvest festivals are major occasions of joy and gaiety. The correct statement is(a) Uttar Pradesh, Bihar and Madhya Pradesh celebrate Til Sankranti.Correct(b)Jharkhand celebrates Pongal and Tamil Nadu celebrates Nabanna-Incorrect.(c)Gujarat celebrates Lohri and Kerala celebrates Onam.-Incorrect(d)Maharashtra celebrates Gudi Padwa, Assam celebrates Bihu and West Bengal celebrates Nabanna.-Correct.The correct options are (a) and (d).Additional InformationUttarayan in Gujarat:It is a harvest festival in Gujrat.It is also an International Kite Festival which is celebrated since 1989.It is a part of the official celebration of Uttarayan.Onam-Kerala:It is a traditional harvest festival in Kerala that is celebrated with great passion throughout the state.The event lasts ten days with the arrival of Mahabali.People decorate their house entry with flower rangoli, don new traditional costumes.Pongal-Tamil Nadu:It is another name for Makar Sankranti, which is observed simultaneously in various places across Tamil Nadu.Pongal denotes 'overflowing' or 'overheating.'This is a thanksgiving celebration in which people express their gratitude to Mother Nature for the rice harvest that year.This four-day festival is one of India's most colourful harvest celebrations.Sohrai-Jharkhand:It is the harvest festival of Jharkhand.This festival is also known as the Cattle Festival.Mainly tribal Indian Santal, Munda and Oraons celebrate this festival.