${?}_{{?}_{{?}_{?}}{?}_{i}s\text{r}\text{e}\text{q}\text{u}\text{i}\text{r}\text{e}\text{d}\text{f}\text{o}\text{r}\text{a}business\text{e}\text{n}\text{v}\text{i}\text{r}\text{o}\text{n}\text{m}\text{e}\text{n}\text{t}tobe\text{c}\text{o}\text{n}\text{d}\text{u}\text{c}\text{i}\text{v}\text{e}to\text{i}\text{n}\text{n}\text{o}\text{v}\text{a}\text{t}\text{i}\text{o}\text{n}\text{a}\text{n}\text{d}\text{e}\text{n}\text{t}\text{r}\text{e}\text{p}\text{r}\text{e}\text{n}\text{e}\text{u}\text{r}\text{i}\text{a}\text{l}\text{a}\text{c}\text{t}\text{i}\text{v}\text{i}\text{t}\text{y}\text{.}}$

Question $2$ options:

$a$

Barriers $to$ foreign trade and investment

$b$