Hi !!
<em>Present simple or continuous.</em>
<em />
1- Do you want something to eat ? <em>(fact)</em>
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2- Claire's in the bathroom. She is washing her hair. <em>(the action is happening now)</em>
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3- My sister and I don't <em>(do not) </em>watch TV very <u>often</u>. <em>(fixed habit)</em>
<em>-</em>
4- <u>Be quiet</u> ! The baby .The baby is sleeping. <em>(imperative means right now)</em>
<em>-</em>
EXPLANATION
present simple = for routines, generalizations, facts, when a frequency adverb is employed <em>( as n° 2 "often")</em>
present continuous = when the action is happening now.
hope this helps ☺☺☺