"Pension funds seeking safety of principal and maximum income would use which investment strategies?"

Purchase government and agency securities and sell covered call contracts.

Explanation:

Purchase government and agency securities and sell covered call contracts because the pension amount or fund must be managed prudently. Therefore, the purchase of government securities suitable as the sale of its covers calls contract. While short sell covers more risk so it is not suitable. Additionally, sell short govt. securities include the sale of naked call contracts.

among other factors, composers started writing dynamic markings in their scores because "new instruments allowed for more dynamic ranges and contrast."

dynamics allude to the loudness or softness of music. dynamics offer an approach to demonstrate articulation in sheet music. they to drive the enthusiastic substance of music through volume and force. maybe you could alter both the volume and the shading profundity on your screen at the same time. we can likewise think about the force side of elements as the quality of a note. a few notes are intended to be played delicately and gently, while others are intended to be played all the more firmly.  

some dynamics markings have a letter 'm,' which remains for mezzo, signifying 'medium.' so a mezzo piano unique stamping resembles this (mp) and intends to play medium calm, while a mezzo specialty dynamic resembles this (mf) and intends to play medium loud.