False – The INC (Lahore Session, Dec 1929) authorized the Working Committee to launch Civil Disobedience; Gandhi proceeded after the 11-point ultimatum (Salt March, Mar 1930).
False – Observing 26 January as Independence Day was decided at Lahore in Dec 1929 and first observed on 26 Jan 1930, before the movement began.
False – The First Round Table Conference (Nov 1930–Jan 1931) occurred during the movement (INC boycotted).
False – The movement wasn’t withdrawn due to violence (that was the Non-Cooperation Movement in 1922). CDM was suspended by the Gandhi–Irwin Pact (Mar 1931) and finally withdrawn in 1934 after sustained repression and waning momentum.