The old people are fragile. First of all, from a physical point of view, they are not as strong as they used to be. In other words, a simple cold may get them in real trouble. Besides, they are emotionally dependent on the people around, especially their children and grandchildren. And finally, their minds are fixed. Thus, they are against changes in many cases. For instance, they may prefer to use their old radio to get the news instead of online news on the internet. To sum up, we need to take care of the elderly. 

TS                The old people are fragile.

Support₁         They are not as strong as they used to be. 

Support₂       They are emotionally dependent.

Support₃       Their minds are fixed. 

RTS              We need to take care of the elderly.