Which one of the following is an indication of the quality of a research journal ?

The impact factor, published in Journal Citation Reports, is a journal-level measure: the average number of citations received in a year by the articles the journal published in the two preceding years. It is widely used as an indicator of a journal's standing. The h-index, g-index and i10-index (the last used by Google Scholar) mainly measure the output and citations of individual researchers.