What is the correct answer please

I think it's the second answer --If you increase the acidity..

I hope answer I can answer your question!

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

you didnt put any of the following