Worth five points Study the chart showing levels of American troops in Vietnam.

A 2-column table with 9 rows titled U S Military Forces in Vietnam from 1964 to 1972. The first column is labeled Year with entries 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, and 1972. The second column is labeled U S Military Forces with entries 23,300; 184,300; 385,300; 485,600; 536,100; 475,200; 234,600; 156,800; and 24,200.

Based on this chart, why did antiwar protests peak in the late 1960s?

The number of troops sent to Vietnam was steadily increasing.
The number of forces fighting in Vietnam decreased far too rapidly.
The number of US forces in Vietnam had doubled from 1964 to 1968.
The number of US troops in Vietnam had reached half a million by 1966.