Most programming languages allow you to ask two or more questions in a single comparison by using a(n) operator that joins decisions in a single statement.

And is the correct answer for the above question.

Explanation:

And operator is an operator in the programming language which described two decisions in a single statement and it gives true if both the condition defined in the statement is true and it gives false if any of the conditions defined in the statement gives the false result.The above question-statement asked about that operator by which the user can write the two conditions in a single statement. Then the answer is And operator. One example for And operator in c language with if statement is-- if(a>=5&&a<=10), in which && symbols represents AND operator.

The answer should be b.