According to a 1996 gallup poll, the proportion of adults who volunteered between 1989 and 1995. increased decreased remained the same none of the above

Gallup is a believable surveying association; however one should comprehend the constraints of surveying. People will regularly come across Gallup surveys cited in media reports. It is regarded credible and respected. But, all surveying has a few shortcomings which rely upon the different systems and points of interest of the survey and its inquiries.

the answer is true!