1. Talking and singing to the vegetables is good for the vegetables.
2. Talking and singing to the vegetables is good for the vegetables and produce.
3. Talking and singing to the vegetables is good for the produce.
4. Talking and singing to the vegetables is good for themselves.
5. Talking and singing to the vegetables is good for them.
[Which ones are grammatical? Which ones are commonly used? Do we have to use 'is'? How about 'are' instead of 'is'?]
#s 1 and 5 are correct.
Since "produce" was not mentioned earlier in the sentence, I wouldn't use 2 or 3.
#4 is incorrect since the vegetables didn't sing to themselves.
http://english-zone.com/members/grammar/reflex01.html
Out of the given statements, the ones that are grammatically correct are:
1. Talking and singing to the vegetables is good for the vegetables.
2. Talking and singing to the vegetables is good for the vegetables and produce.
3. Talking and singing to the vegetables is good for the produce.
5. Talking and singing to the vegetables is good for them.
All of these statements are commonly used, although the context may vary. It is noteworthy that statement number 4 is not grammatically correct and does not convey a clear meaning.
Regarding the use of "is" versus "are," it depends on the subject of the sentence. In these statements, the subject is "Talking and singing to the vegetables," which is a singular action. Therefore, using "is" is grammatically appropriate.
However, if we rephrase the sentence to have a plural subject such as "Talking and singing to the vegetables and fruits," we would use "are" instead of "is." For example: "Talking and singing to the vegetables and fruits are good for them."