Find the critical value for $α = 0.05$ with $df = 16$ for a right tailed (upper tailed) test.

1.746

The correct answer is Option (1) → 1.746

Given $α = 0.05, df = 16$.

Consult the t-distribution table.

See area in right tail (upper tail) 0.05 in topmost row against degree of freedom 16 in leftmost column. The critical value is 1.746.