Step 1: Expand the names:
ICCR: Indian Council for Cultural Relations. SNA: Sangeet Natak Akademi. CCRT: Centre for Cultural Resources and Training. ICSSR: Indian Council of Social Science Research.
Step 2: Group by field:
The words culture, Sangeet Natak (music and drama) and cultural resources point to arts and culture. The words social science research point to academic study.
Step 3: Decide:
Three names share the arts and culture field. One name stands in a different field, so that one is the odd one. This is ICSSR.
Step 4: Match to the option number:
ICSSR is printed as the second option.
Step 5: Option check:
Now go option by option. ICCR sends Indian artists abroad and brings foreign artists here, so it is cultural. SNA is the apex body for music, dance and drama, so it is cultural. CCRT trains school teachers in arts and culture, so it is cultural. ICSSR gives grants for studies in economics, sociology and similar fields, so it is academic. A single body stands apart from the other three, and that is ICSSR. In the exam, a quick way is to read the last letters: SSR stands for Social Science Research, a clear mark of difference.
Final Answer:
ICSSR is the only body of research in social science, so it is the odd one out.
\[ \boxed{\text{ICSSR, option 2}} \]