Final answer:
The strong subject lines in the given options are: 'Community requests your support,' 'Save our forests!', and 'Animals are dying—we must speak up.' These subject lines effectively convey the purpose and urgency of the email.
Step-by-step explanation:
The strong subject lines in the given options are:
- The community requests your support.
- Save our forests!
- Animals are dying—we must speak up.
These subject lines are strong because they convey the purpose and urgency of the email. They grab the reader's attention and make it clear what the content of the email will be about. Examples of weak subject lines to avoid include ones that are vague or too general, such as 'It is imperative that' or 'Hello there, Mr. Jones.'