Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Enhancing Cognitive Abilities With Comprehensive Training: A Large, Online, Randomized, Active-Controlled Trial
Brief Summary: The purpose of this study is to measure the efficacy of an online cognitive training program against an active control condition in a large, randomized trial.


Options:
A: Arm Label: Exercises+CognitiveTraining+Vitamin D3; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Other: Exercises (E), Other: Cognitive Training (CT) | Arm Label: Exercises+CognitiveTraining+Placebo D3; Type: EXPERIMENTAL; Interventions: Other: Exercises (E), Other: Cognitive Training (CT), Other: placebo D3 | Arm Label: Exercises+Control CogTraining+Vitamin D3; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Other: Exercises (E), Other: control cognitive training | Arm Label: Exercises+Control CogTraining+Placebo D3; Type: EXPERIMENTAL; Interventions: Other: Exercises (E), Other: placebo D3, Other: control cognitive training | Arm Label: Placebo exercise+Control Cog+Placebo D3; Type: PLACEBO_COMPARATOR; Interventions: Other: placebo D3, Other: control cognitive training, Other: Placebo exercise | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): Exercises+CognitiveTraining+Vitamin D3, Exercises+Control CogTraining+Vitamin D3 | Intervention Type: OTHER; Name: Exercises (E); Assigned to Arm(s): Exercises+CognitiveTraining+Placebo D3, Exercises+CognitiveTraining+Vitamin D3, Exercises+Control CogTraining+Placebo D3, Exercises+Control CogTraining+Vitamin D3 | Intervention Type: OTHER; Name: Cognitive Training (CT); Assigned to Arm(s): Exercises+CognitiveTraining+Placebo D3, Exercises+CognitiveTraining+Vitamin D3 | Intervention Type: OTHER; Name: placebo D3; Assigned to Arm(s): Exercises+CognitiveTraining+Placebo D3, Exercises+Control CogTraining+Placebo D3, Placebo exercise+Control Cog+Placebo D3 | Intervention Type: OTHER; Name: control cognitive training; Assigned to Arm(s): Exercises+Control CogTraining+Placebo D3, Exercises+Control CogTraining+Vitamin D3, Placebo exercise+Control Cog+Placebo D3 | Intervention Type: OTHER; Name: Placebo exercise; Assigned to Arm(s): Placebo exercise+Control Cog+Placebo D3
B: Arm Label: Standard health counseling at baseline; Type: NO_INTERVENTION; Interventions: N/A | Arm Label: Lifestyle counseling; Type: EXPERIMENTAL; Interventions: Behavioral: Nutritional guidance, Behavioral: Exercise, Behavioral: Cognitive training, Other: Reduction of vascular risk factors | Intervention Type: BEHAVIORAL; Name: Nutritional guidance; Assigned to Arm(s): Lifestyle counseling | Intervention Type: BEHAVIORAL; Name: Exercise; Assigned to Arm(s): Lifestyle counseling | Intervention Type: BEHAVIORAL; Name: Cognitive training; Assigned to Arm(s): Lifestyle counseling | Intervention Type: OTHER; Name: Reduction of vascular risk factors; Assigned to Arm(s): Lifestyle counseling
C: Arm Label: Cognitive Training; Type: EXPERIMENTAL; Interventions: Other: Lumosity Cognitive Training | Arm Label: Crossword Puzzles; Type: ACTIVE_COMPARATOR; Interventions: Other: Crossword Puzzles | Intervention Type: OTHER; Name: Lumosity Cognitive Training; Assigned to Arm(s): Cognitive Training | Intervention Type: OTHER; Name: Crossword Puzzles; Assigned to Arm(s): Crossword Puzzles
D: Arm Label: Cognitive training group (Cog); Type: ACTIVE_COMPARATOR; Interventions: Behavioral: Cognitive training | Arm Label: Physical exercise group (PE); Type: ACTIVE_COMPARATOR; Interventions: Behavioral: Physical exercise | Arm Label: Sequential training group (Seq); Type: EXPERIMENTAL; Interventions: Behavioral: Cognitive training, Behavioral: Physical exercise | Arm Label: Dual-task training group (Dual); Type: EXPERIMENTAL; Interventions: Behavioral: Cognitive training, Behavioral: Physical exercise | Intervention Type: BEHAVIORAL; Name: Cognitive training; Assigned to Arm(s): Cognitive training group (Cog), Dual-task training group (Dual), Sequential training group (Seq) | Intervention Type: BEHAVIORAL; Name: Physical exercise; Assigned to Arm(s): Dual-task training group (Dual), Physical exercise group (PE), Sequential training group (Seq)

Answer: C