Question

practice it! select the statement(s) that accurately support the need for repetition in the scientific investigation about whether rockets with three fins fly straighter than rockets with four fins. multiple trials using both rockets will help eliminate random results. launching a rocket several times increases the chance of losing the rocket when it is in the air. conducting multiple trials takes more time and effort. the investigator may not put the rocket on the launcher correctly. a gust of wind could push one of the rockets off course.

Explanation:

Multiple trials help account for variables like incorrect setup, wind - gusts, and randomness. Statements about losing rockets or time/effort do not support the need for repetition.

Answer:

Multiple trials using both rockets will help eliminate random results.
The investigator may not put the rocket on the launcher correctly.
A gust of wind could push one of the rockets off course.