Question $12(1$ point$)$

The referencing environment of a statement is the collection of al of the variables that are visible to that statement.

True

False

Question $13(1$ point$)$

In Prolog, the cut$-$fail combination is used to express that a goal should fail if the condition prior to the cut$-$fail succeeds.

True

False

Question $14(1$ point$)$

Syntax and semantics are the two elements used in the description of the representation and behavior of a programming language.

True

False

Question $15(1$ point$)$

Execution of functional language programs is more efficient than that of imperative ones.

True

False