Match each exercise to its corresponding muscle or muscle group

The matched answer is given below with explanation.

Explanation:

Dumbbell Flys = Pectorals

Push-downs = Triceps

Machine Back Press = Shoulders

One Arm Row = Latissimus Doris (Lat)

If you are doing a single muscle exercise on a single day then:

The Dumbbell fly should be added in workout on a Chest Day which trains your upper chest muscles including PECTORALS.The Machine back press should be done on a shoulder workout day or can be done on a back day also.The Push-down exercise should be done on a Tricep day which is a basic exercise of Tricep training.One arm row is a back exercise which includes your Latissimus Doris muscles including traps and other back muscles.

Primary effectit is the most accurate.