When reading a nutrition study, which set of methodological features should you analyze first to judge internal validity and potential bias?

Study design (randomization, control groups), sample size and selection, blinding procedures, outcome measures, and disclosed funding or author conflicts.

Only the institution name where the authors work, because institutional prestige is the sole determinant of validity.

The number of social media shares the article received and the presence of celebrity endorsements.

The color scheme of figures, the length of the abstract, and whether the PDF is freely downloadable.