Read the following passage carefully and answer the questions given below :
"The opposition political parties led by Jayaprakash Narayan pressed for Indira Gandhi's resignation and organised a massive demonstration in Delhi's Ramlila grounds on 25 June 1975. Jayaprakash announced a nationwide satyagraha for her resignation and asked the army, the police and government employees not to obey "illegal and immoral orders."
Which one of the following parties had not joined the demonstration led by Jayaprakash Narayan at Ramlila Ground on 25 June 1975 ?
Why were the parties asking for the resignation of Indira Gandhi ?
What happened on 26 June 1975 ?
Why had the mood of people turned against the Congress Party in 1975 ?