1. -2 * (-1/4) = ?

Let's calculate the expression:

$$ -2 \cdot \left(-\frac{1}{4}\right) $$

When we multiply two negative numbers, we get a positive number. So,

$$ -2 \cdot \left(-\frac{1}{4}\right) = 2 \cdot \frac{1}{4} $$

Now, multiply 2 by 1/4:

$$ 2 \cdot \frac{1}{4} = \frac{2}{4} $$

Simplify the fraction by dividing both the numerator and denominator by 2:

$$ \frac{2}{4} = \frac{1}{2} $$

Thus, the result is 1/2.

However, if the question implied choosing the closest answer from the options, the best way to address the question is to recalculate the initial expression:

$$ -2 \cdot \left(-\frac{1}{4}\right) = \frac{1}{2} = 0.5 $$

However, if the options provided are incorrect and the task is to provide the right answer it's: