Concept:
The organization responsible for monitoring endangered species globally is:
\[
\boxed{\text{IUCN}}
\]
IUCN stands for:
\[
\text{International Union for Conservation of Nature}
\]
It maintains the famous:
\[
\text{IUCN Red List}
\]
which records conservation status of plants and animals worldwide.
Step 1: Understand endangered wildlife monitoring.
Many species across the world are threatened due to:
• Habitat destruction
• Pollution
• Hunting
• Climate change
Organizations monitor their population status to support conservation.
Step 2: Understand role of IUCN.
IUCN:
• Classifies endangered species
• Maintains Red Data Book
• Supports biodiversity conservation
Categories include:
• Vulnerable
• Endangered
• Critically endangered
Step 3: Analyze all options carefully.
Option (A): IUCN
Monitors endangered wildlife globally.
Correct.
Option (B): ICRISAT
Agricultural research institute.
Incorrect.
Option (C): UNDP
United Nations Development Programme.
Not specifically wildlife monitoring body.
Incorrect.
Option (D): FAO
Food and Agriculture Organization.
Incorrect in this context.
Step 4: Choose the correct answer.
Thus, the organization monitoring endangered wildlife is:
\[
\boxed{\text{IUCN}}
\]
Hence,
\[
\boxed{(1)\ \text{IUCN}}
\]