During the process of Beta decay the ratio of neutron to proton:

decreases

The correct answer is option (2) : decreases

Neutron to proton ratio of an atom nucleus is the ratio of the number of neutrons to its number of proton. This ratio generally increases with increase in atomic number in stable nuclei. Beta decay decreases the ratio of neutron to proton eq.

$10({^{23}Ne}) → 11({^{23}Na}) + –1e°$

It is clearly visible that the neutron proton ratio decreases in Beta decay