To pass a gas from one vessel to another, you will use
Delivery tube
The explanation for the correct option - (A) Delivery tube
Delivery tube is an apparatus made of a non-reactive material like glass that is used to transfer gas from one vessel to another for various purposes.
The explanation for the incorrect options -
(B) Glass jar - used to collect gas.
(C) Glass rod - is used to stir the solution.
(D) Test tube - used to conduct small scale tests.
Hence, option (A) is correct. The delivery tube is used to transfer gas from one vessel to another.