Please select the eligibility criteria that correspond to the clinical trial below.
Title: Incentivizing Behavior Change Skills to Promote Weight Loss
Brief Summary: The purpose of this study is to determine the feasibility of providing incentives to people enrolled in a weight-loss program for dietary self-monitoring and/or interim weight loss.


Options:
A: Inclusion Criteria:

* Age between 18-70
* Body Mass Index between 30-50
* English Speaking
* Have a smartphone that can be used for study activities

Exclusion Criteria:

* Report being unable to walk 2 blocks without stopping
* Are currently participating in weight loss treatment, have a history of bariatric surgery, or lost ≥5% in the past 6-months
* Are pregnant or plan to become pregnant within 1 year
* Report a heart condition, chest pain during periods of rest or activity, or loss of consciousness on the Physical Activity Readiness Questionnaire
* Report a medical condition that could jeopardize their safety in a weight control program with diet and exercise guidelines
* History of or current traumatic brain injury, dementia or Alzheimer's disease; a history of Multiple Sclerosis, or other neurological disorders
* Report conditions that, in the judgment of the PI, would render them unlikely to follow the protocol (e.g., relocation, dementia, unable to read and write in English)
* Have no Internet access or unwilling to use personal smartphone for study.
B: Inclusion Criteria:

* Living in the region of Leuven
* Middle-aged (from 18 to 65 years)
* Having a body mass index between 29-34 kg/m²
* Having an e-mail address
* Having a personal computer

Exclusion Criteria:

* Suffering from a known physical (e.g., orthopedic limitations, stroke, etc.) and/or psychological (e.g., anorexia, bulimia, depression, etc.) disease or co-morbidity
* Intake of any medication with possible impact on body weight, endurance capacity
* Currently treated for diabetes (both Type 1 \& 2).
* No sleepapneu has been determined during the last year.
* Having a history of systematic strength or endurance training (moderate to high intensity training more than once a week) in the year before the beginning of the trial
* Having a history of following a supervised dietary advice in the year before the beginning of the trial
* Having a history of bariatric surgery or any other malabsorption-related disease.
* Pregnancy
C: Inclusion Criteria:

* Age: 18 - 65 years
* BMI: 30,0 - 39,9 kg/m2
* Owner of a smartphone
* Caucasian
* No severe diseases
* Informed written consent

Exclusion Criteria:

* Diabetes mellitus
* Severe cardiovascular and/or respiratory disease
* Untreated high blood pressure
* Severe kidney disease
* Active cancer (or in remission)
* Inflammatory bowel disease
* Severe chronic infections and/or inflammations
* Severe mental-health disorders
* Neurodegenerative disorders
* Endocrine diseases
* Lipedema
* Pregnancy and lactation
* Vigorous weight fluctuations (\> 5 kg) in the last 3 months
* Immobility
* Surgery in the last 3 months
* Participation in other intervention studies
* Carrier of pace makers
* Blood donation or transfusion in the last 3 months
D: Inclusion Criteria:

* desire to lose weight;
* agree to attend visits per protocol;
* access to telephone and transportation;
* English speaking;
* able to complete study measures;
* smart phone with data and texting plan;
* body mass index 30 kg/m2 or greater

Exclusion Criteria:

* pregnancy, breastfeeding, or lack of birth control if premenopausal
* dementia, excessive alcohol use, or psychiatric illness
* weight loss \>4.5 kg in month prior to screening
* weight \> 380 lb (due to limit of cellular scale)
* enrollment in other weight loss program
* residing in nursing home or receiving home health care
* unable to attend weight loss group at scheduled times
* impaired hearing
* medication other than metformin, incretin mimetics and incretin enhances for type 2 diabetes
* unstable heart disease in 3 months prior to screening
* furosemide 40 mg or higher (or equivalent)
* chronic kidney disease
* 2 or more errors on cognitive screener
* blood pressure ≥160/100 mmHg

Answer: D