When do national party conventions meet?
every two years
every year
in congressional election years
in presidential election years

Explanation:

A United States presidential nominating convention is a political convention held every four years in the United States by most of the political parties who will be fielding nominees in the upcoming U.S. presidential election. I hope that helps you.

On the same day in every state  - Gradpoint

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.

a.) are both appointed for life