The correct option is A Numerical Data
When every value in the collection of data is a number, then the data is said to be numerical data.
While, the non-numerical information that can be categorised into different groups is known as categorical data.
Since the number of bikes represents the quantity and also the every value noted while collecting the data of number of bikes is a number, thus the collected data will be numerical in nature.
So, option (c) correct.