Select the word that fits the analogy :

Explicit : Implicit : : Express : $\_\_\_\_$ .

The untimely loss of life is a cause of serious global concern as thousands of people get killed $\_\_\_\_$ accidents every year while many other die $\_\_\_\_$ diseases like cardio vascular diseases, cancer, etc.

A superadditive function $f(\cdot)$ satisfies the following property

$$ f\left(x_1+x_2\right) \geq f\left(x_1\right)+f\left(x_2\right) $$

Which of the following functions is a superadditive function for $x>1$ ?

$a, b, c$ are real numbers. The quadratic equation $a x^2-b x+c=0$ has equal roots, which is $\beta$, then