Most people may not think of photographic processing to be hazardous, but many of the chemicals used can cause health problems, especially if they are not used in rooms with proper ventilation.[/u]
A. Most people may not think of photographic processing
to be hazardous, but many of the chemicals used can cause health problems, especially if they are not used in rooms with proper ventilation.
B. Most people may not think of photographic processing
being hazardous, but many of the chemicals used can cause health problems, especially if they are not used in rooms with proper ventilation.
C. Most people may not think
hazardously of photographic processing, but health problems
can be caused when many of the chemicals are used in rooms that are not properly ventilated.
D. Most people may not think of photographic processing
as being hazardous, but many of the chemicals used can cause health problems, especially if they are not used in rooms with proper ventilation. (wordy, unidiomatic)
E. Photographic processing, while not thought of as being hazardous, can cause health problems when many of the chemicals used are done so in rooms with no proper ventilation.
I would say E.