Adding more premises to a valid deductive argument can make it go from valid to invalid cannot make it invalid can make the other premises true can make it inductively stronger

cannot make it invalid

Explanation:

A deductive argument is one in which the premises necessarily follow from the conclusion. This means that if the premises are true, the conclusion will also be true. So adding assumptions only reinforces the argument, it can never invalidate a dedutive argument.

taking into account that a theme is the central topic a text treats and can be developed through a story, play, poem etc. the following are themes that can be further developed:  

my best friend jeffrey has many unusual interests. (the story could be about each of the unususal interests)

once a man gives his soul over to evil, he can never go back. (this could be a saying or a proverb)

the three sheepdogs lay around the yard all day. (it could be developed detailing how each of these sheepdogs lay around)

a priest's collar has an unusual effect upon people. (it could be developed detailing the different effect upon people)

innocence is a powerful force in a world full of corruption. (it could be developed detailing how is a world full of corruption)

king lear is a play shakespeare wrote later. (it is just a sentence and doesnt give any idea or topic to be discussed in details.

evil often wears the disguise of innocence. (this could be a saying or a proverb)

hey my good buddy lemme ask are u male or female? ?