The important organisation of development of small scale industries is

IDBI
EXIM BANK
SIDBI
None of the above

The correct answer is C. SIDBI.

The Small Industries Development Bank of India (SIDBI) is a wholly-owned subsidiary of the Ministry of Finance, Government of India. It was established in 1989 to promote the development of small-scale industries (SSIs) in India. SIDBI provides financial assistance, training, and other support services to SSIs.

IDBI is the Industrial Development Bank of India. It is a state-owned development bank that provides financial assistance to industrial projects in India. EXIM Bank is the Export-Import Bank of India. It is a state-owned bank that provides financial assistance to Indian exporters and importers.

None of the above is the correct answer because it does not include SIDBI.