Using a Measurement Scale Believed to Produce Interval Level Measurement

Multiple Choice

Using a measurement scale believed to produce interval level measurement, an instructor wishes to learn if the variable "attitude toward statistics" will show improvement over the course of a semester in her class. She administers the scale the first and last days of the class and compares the pairs of scores for every student. What test should she use to learn if there is statistical support for her hypothesis that students will show improved attitudes following her course?

A) one sample t
B) two sample independent t
C) two sample dependent t
D) simple ANOVA