I think d is the answer of the first step and a is the second step answer
The consensus opinion is that Machu Picchu was built as an estate for the great Inca Pachacuti. It is also considered a pilgrimage site that Incas would take to pay respects to the great Inca leader. The pilgrimage taken to the site is the route now called the Inca Trail.
The most appropriate word that could substitute 'skillful' would be C.<span>masterful
The world skilfull in this particular context means having the ability to do something with a certain amount of expertise.
The word masterful have a similar meaning because it indicates the person able to do that certain thing with higher than average virtuoso. </span>
A Press release is an announcement sent to the media to generate publicity .
