Explanation:

Only statement 3rd is correct.

• The Territorial Army (TA) recently inducted its first batch of Mandarin-trained officers to support the regular Army's efforts to enhance expertise in the Chinese language.

About Territorial Army (TA)

• The Indian Territorial Army (TA) is a second line of defence after the regular Indian Army; it is not a profession, occupation or a source of employment. 

• It is only meant for those people who are already in mainstay civilian professions; in fact, gainful employment or self-employment in a civil profession is a prerequisite for joining the TA.

Role

• The duties of the TA include “relieving the Regular Army from static duties”, while also providing assistance to civil authorities in times of natural calamities and tragedies.

• They also help civil administration with providing essential services in areas where state machinery is stretched or there are security threats.

• Volunteers of the TA usually serve in uniform for a few days every year, so that they can bear arms for national defence in times of dire need or national emergencies.

Hence option 1st is correct.