Activity

[ShirleyLing]

"People should look out for suspicious activity/activities."

Should it be the uncountable form of "activity" or its plural form?

[bhaisahab]

"People should look out for suspicious activity/activities."

Should it be the uncountable form of "activity" or its plural form?

In what context?

[ShirleyLing]

In the context of the neighborhood.

[bhaisahab]

In the context of the neighborhood.

Generally speaking, organisations like the Neighbourhood Watch "look out for suspicious activity" in their areas. Neighbourhood Watch and Home Watch Network | The only official national Neighbourhood Watch and Home Watch website