A chemical reaction that has a positive g is best described as endergonic.
Option (a) is correct.
A reducing agent is the one which loses electrons to other substance.
Here, Zn has oxidation number 0 in the L.H.S of the equation, but on R.H.S its oxidation number is +2 i.e. it Zn has donated two of its electrons to

.
Hence, Zn is the reducing agent here.
To try to get attention, it's not safe and you can get sent to the hospital. People think it's a joke, it's really not.
Answer:
Neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen.
Explanation: