Sentence:  In addition , in many cases , a variety of concrete social resources - homemaker , day care , medical and financial aid - must <WSD>be</WSD> reasonably available for the reality support needed to bolster the family in its individual and collective coping and integrative efforts . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)