The quiet period helps:

$a.$prevent the original investors $in$ a firm from selling their shares and destabilizing a $security\text{'}s$ price during the first month $of$ public trading.

$b.$ensure that all potential investors have access $to$ the same information.

$c.$the SEC determine $if$ the information included $in$ the registration statement $is$ correct.

$d.$underwriters gather bids $in$ a Dutch auction.

$e.$establish a fair offer price.