SAT writing question from Jan sat

Test Preparation SAT Preparation
1

<p>It says:</p>

<p>The 7 month year old baby was considered precocious to her family</p>

<p>The "to her family" was the error but i dont understand why......</p>

2

<p>I'm pretty sure the idiom is "by her family."</p>

3

<p>Yeah, ditto on cookietime. That's an oddball though.</p>