Answer:
B. Cross-Sectional
Explanation:
A Cross-sectional study of design is a kind of design of observational study . In the cross-sectional study, an investigator measures or examines the outcome as well as the exposures in any study participants at the same time.
Cross-sectional design research includes using some different category of the people who differ in some variable of interest but they share few other characteristics, like educational background, socioeconomic status and ethnicity.
A Cross-sectional studies are mostly used by experimenters or researchers to study the developmental psychology in humans.
Thus in the context, the researcher using 50 participants to study the developmental changes in their choices to listen to music is a type of cross sectional research design.
Hence the correct option is (B).
Answer:
Explanation:
Carl Vinson (November 18, 1883 – June 1, 1981) was an American politician who served in the U.S. House of Representatives for over 50 years and was influential in the 20th century expansion of the U.S. Navy. He was a member of the Democratic Party and represented Georgia in the House from 1914 to 1965. He was known as "The Father of the Two-Ocean Navy". He is the longest-serving member of the United States House of Representatives from the state of Georgia.[1]
Thank You!!!! Likewise ♥️
Answer:
The Mexican-American War (1846-1848) was caused by many factors. Going back to 1836, one of the reasons was the Treaty of Velasco. The secret treaty had called for recognition of the Rio Grande as the border, and the release of Santa Anna.
Explanation:
the Nueces River by Taylor's troops as an act of war so Mexican troops were ordered to cross the Rio Grande. President Polk saw this as aggression towards the US and he declared war on Mexico on May 13, 1846 with the vote of 173-14 in Congress and 42-2 in the Senate both in favor of the war,2 3thus starting the Mexican-American War.
Answer: B.
Explanation: The ocean currents produce waves that hit the continental plates and more them
