I think the answer is d. all of the above
Answer:
n ballet, a variation (sometimes referred to as a pas seul, meaning to dance alone) is a solo dance. In a classical grand pas de deux, the ballerina and danseur each perform a variation.
The calotype process createa translucent original negative image which is its advantage to daguerreotype.
Explanation:
The calotype method produced a translucent starting negative picture from which multiple positives could be executed by a simple touch sheet. This gave it an essential advantage over the daguerreotype process, which occasioned an opaque real positive that could only be reproduced by mimicking it with a camera.
