Does the sentence "Furthermore, to avoid ethnocentrism, researchers must be careful not to define the culture's role in adolescence in terms of their own cultural beliefs." provide a valid answer to the question "What is a challenge researchers face when studying culture and adolescents?"

A: yes

Does the sentence "In 628 AD, Brahmagupta suggested that gravity was a force of attraction." provide a valid answer to the question "When did Aryabhata live?"

A: no

Does the sentence "In 1875 Ismail was forced to sell Egypt's share in the canal to the British Government." provide a valid answer to the question "To whom did Egypt sell its interest in Suez Canal?"

A: yes

Does the sentence "It is an arms race; as better jamming, countermeasures and anti-radiation weapons are developed, so are better SAM systems with ECCM capabilities and the ability to shoot down anti-radiation missiles and other munitions aimed at them or the targets they are defending." provide a valid answer to the question "As better weapons are created, what systems continue to improve as well to counter them?"

A:
yes