1). familiarity2). familiar3). familiarly4). familiarise

1.	1). familiarity2). familiar3). familiarly4). familiarise
Answer» The blank would make COMPLETE sense if it is filled with a noun which could completely define the context. In the given $OPTIONS,’familiar$’ is an adjective which would make no sense when USED as a filler. “$FAMILIARISE$” is a verb which is also an incorrect filler.$ $Since there is no comparison going on in the statement, therefore, option 3 also cannot be used.$ $Option 1 correctly fits the SENTENCE and makes it meaningful.$ $

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