Trinidad is 4,768 km (1,841 sq mi) in area (comprising 93.0% of the country's total area) with an average length of 80 km (50 mi) and an average width of 59 kilometres (37 mi). Tobago has an area of about 300 km (120 sq mi), or 5.8% of the country's area, is 41 km (25 mi) long and 12 km (7.5 mi) at its greatest width. Trinidad and Tobago lie on the continental shelf of South America, and are thus geologically considered to lie entirely in South America.

Multi-choice problem: Is it true that is trinidad and tobago part of south america?

Choose from: a). no. b). yes.
The answer is:
b).