Question

The basic unit of weight in the metric system equal to 0.35 ounces is called what

Answer 1

We know that
The basic unit of weight in the metric system is the gram
1 ounce is equal to 28.3495 grams
by using proportion
$\frac{ 1 oz}{28.3495 gr} = \frac{0.35 oz}{x gr} \\ x=28.3495*0.35 \\ x=9.92 gr$

the answer is
$9.92 grams$