What is the value of the source in revealing the reasons for Gladstone's government decision to occupy Egypt in 1882?

a) The source is highly valuable and provides comprehensive insights into the decision-making process.
b) The source is moderately valuable, offering some information but lacking depth in certain aspects.
c) The source has limited value, providing only basic information without delving into the reasons.
d) The source is not valuable and does not contribute to understanding the decision to occupy Egypt.