Which is not an argument used against Pauline authorship of the Pastoral Epistles?

Which of the following is not an argument for Colossians as authentically Pauline? 

CormAnatomy5686.jpgWhat type of specialized stem is pictured in the photo?

Carrots and parsley have ______________ fruits.

This organism is known as ____________, and it is classified as a _______________. unnamed.jpg

What distinguishes angiosperms from gymnosperms?

This organism is known as ____________ , and it is classified as a________________. nostoc.jpg Picture2.png

What is the primary component of bacterial cell walls that distinguishes them from archaeal cell walls?

By how many newtons does the weight of a 100-kg person change when he goes from sea level to an altitude of 5.0 km if we neglect the earth’s rotational effects? (The mean radius of the Earth is 6.38 × 106 m, G = 6.67 × 10-11 N ∙ m2/kg2.)

Which type of cone is this in the picture? woody cone.jpg