Hi,<br/>which word fits into all three following sentences, please?<br/><br/><span style="color:rgb(0,0,0);"><b>James is able to ........ an enormous amount of factual information in his head.<br/><br/>Although the old house has been completely renovated, care has been taken to ........ as many of the original features as possible.<br/><br/>When you're buying outdoor adventure clothing, the thing to look for is material that does not ........ a lot of moisture.</b></span><br/><br/>I hesitate between "preserve","sustain" and "retain". Please guide me. <br/>Thank you in advance!<br/>