I am currently an international senior undergraduate physics student, with a 3.41 GPA and no research experience.
I want to apply for PhD program in USA, and I am confused when it is best to apply;
1) before finishing my bachelors degree.
2) waiting to finish it and get engaged in research during my senior year.
3) finish my bachelors degree, get engaged in research, and do a masters degree.
I need to know: does waiting for option 2 and 3 really increase my chances in getting accepted for a PhD program in physics or biophysics? Or should I apply now and save some time?