Among your options, there is only one clause, and that would be A. "she got soaked walking."
When it comes to clauses, they need to have a subject (she in A), and a verb (got soaked in A). The other options don't have both the subject and the verb and thus cannot be considered clauses. There is however another clause in this sentence (because her umbrella was in her gym locker), but it is not one of your options.
Traditionally, indigenous comes from the Latin word indigena (indu/endo: in/within + gignere: to beget (to procreate or generate). But here we are simply looking at roots. The root words here are -gen (something produced, and by extension, birth) and -ous (possessing/full of), and that combination is not an option, it seems. HOWEVER, it is not uncommon for suffixes to have more than one meaning, and this is no exception. -ous also means 'having, full of, or characterized by', meaning your answer is the second option, 'the word root “gen” means “birth,” and the suffix “-ous” means “having the quality of something.”'
