Explanation:

The correct answer is option 'D' - Creation of an independent Tamil Eelam (state).

The initial demands of Sri Lankan Tamils were primarily focused on achieving equal rights and recognition within the existing Sri Lankan state. They sought political, linguistic, and economic rights to address the discrimination and marginalization they faced.

Let's examine each of the given options to understand why option 'D' is not one of the initial demands:

a) Recognition of Tamil as an official language:
- The Sri Lankan Tamils demanded the recognition of Tamil as an official language alongside Sinhala, the majority language. They sought equal status for Tamil in all government institutions and official documentation. This demand aimed to protect and promote the Tamil language and culture.

b) Regional autonomy:
- The Sri Lankan Tamils demanded regional autonomy, also known as devolution of power or self-rule, to have control over their own affairs within a federal or decentralized system. They wanted the ability to govern themselves and make decisions regarding their cultural, educational, and economic development. This demand was driven by the desire to have a say in matters that directly affected their community.

c) Equality of opportunity in securing jobs and education:
- The Sri Lankan Tamils demanded equal opportunities in securing jobs and education. They faced discrimination in employment and educational institutions, which limited their access to opportunities and hindered their socio-economic progress. This demand sought to address the systemic barriers that prevented Tamils from achieving their full potential.

d) Creation of an independent Tamil Eelam (state):
- The demand for an independent Tamil Eelam, or a separate state exclusively for Tamils, was not one of the initial demands. This demand emerged later as a result of the failure to address the grievances and demands of the Tamil community within the existing Sri Lankan state. The call for a separate state gained traction among some sections of the Tamil population after years of conflict and marginalization.

In conclusion, option 'D' - Creation of an independent Tamil Eelam (state) - was not one of the initial demands of Sri Lankan Tamils. Their initial demands focused on achieving recognition, autonomy, and equal rights within the existing Sri Lankan state.