Explanation:

An angle is a geometric figure formed by two rays that share a common endpoint, called the vertex. The measure of an angle is determined by the amount of rotation between the two rays.

In this case, we are given that the angle is between 0 and 90 degrees. Let's analyze the possible options:

a) Right angle: A right angle measures exactly 90 degrees. Since the given angle is less than 90 degrees, option a) is incorrect.

b) Acute angle: An acute angle measures less than 90 degrees. Since the given angle is between 0 and 90 degrees, it falls within the range of an acute angle. Therefore, option b) is correct.

c) Obtuse angle: An obtuse angle measures greater than 90 degrees but less than 180 degrees. Since the given angle is less than 90 degrees, it is not considered an obtuse angle. Therefore, option c) is incorrect.

d) Straight angle: A straight angle measures exactly 180 degrees. Since the given angle is less than 90 degrees, it is not considered a straight angle. Therefore, option d) is incorrect.

In conclusion, the correct answer is option b) acute angle because the angle falls within the range of 0 to 90 degrees.