This is an anagram - look for an indicator word that suggests mixing or rearranging letters from the source material.
'Generate' is the anagram indicator. You need to rearrange the letters from 'First' plus the last letter of 'arrive' (which is 'e'). So take the letters F-I-R-S-T and add E, then mix them all up.
Answer: STRIFE | 'Generate' indicates an anagram of 'First' + the last letter of 'arrive' (e). Rearranging F-I-R-S-T-E gives STRIFE.