The question is incomplete as it does not have the option which are:
a. Thinking of himself as a unique brand.
b. Learning about as wide as possible a range of subjects.
c. Taking advantage of various learning pathways.
d. Viewing one's career as a means to a healthy spirituality.
Answer:
Option-A
Explanation:
Intellectual development refers to the developmental changes which lead to the changes in the learning capacity of the person.
The change in the learning ability is observed in the way how the person organised his thoughts into minds, the capacity to think, the way of judging, perception and many other conceptualisations.
In the given question, since the person continuously takes the courses which can improve him as a professional therefore his intellectual development is considered developed to the level in which he himself as unique and a unique brand as a professional master.
Thus, Option-A is the correct answer.
