Oh which musical properties do tonic and agogic accents demand emphasis respectively

An agogic accent is an emphasis by virtue of being longer in duration . Accents which do not correspond to the stressed beats of the prevailing meter are ... In music notation, an accent mark indicates a louder dynamic and a stronger attack to ... This emphasis is typically caused by suchproperties as increased loudness and .

The answer to your question is a. true.

Photography has changed its subject matter quite a lot over the past few years. in the 1800's, it was considered normal for families to have  post mortem photos of their loved ones, and now that would be completely unacceptable. i think that photographers have always pushed boundaries and have been eager to capture everything, it is just society that changes their boundaries.