Answer:
The answer to your question is: i have to answer correct first number three and second number one.
Step-by-step explanation:
1.-regulate cell processes : Nucleic acids are located inside the nucleus and the nucleus is the brain of the cell, it says what functions must be done, then I think this option is correct.
2.- provide structure : Nucleic acids are large molecules but very weak, the couldn't be able to give structure. This option is wrong.
3.- transmit genetic information : The main function of nucleic acids is transmit genetic information, so this option is correct.
4.- fight disease: Nucleic acids are useful to transmit genetic information, and saying the functions a cell must do but fight against diseases is not one of their functions.